WEBVTT - Human Centric Design and the Mazda CX-30 0:00:04.240 --> 0:00:07.240 Welcome to tech Stuff, a production of I Heart Radios 0:00:07.320 --> 0:00:14.080 How Stuff Works. Hey there, and welcome to tech Stuff. 0:00:14.120 --> 0:00:17.239 I'm your host, Jonathan Strickland, and I'm an executive producer 0:00:17.239 --> 0:00:20.239 with I Heart Radio and I love all things tech 0:00:20.800 --> 0:00:24.279 and today's episode is a special one. So for one thing, 0:00:24.560 --> 0:00:27.680 you're going to get to hear that intro all over 0:00:27.800 --> 0:00:31.600 again in just a second, because this episode is brought 0:00:31.640 --> 0:00:34.519 to you by Mazda. The company invited me to come 0:00:34.560 --> 0:00:37.479 out to the Los Angeles Auto Show in November two 0:00:37.520 --> 0:00:40.879 thousand nineteen to check out their cars and specifically to 0:00:40.920 --> 0:00:43.880 get some hands on time with the c X thirty suv, 0:00:44.400 --> 0:00:47.559 and that included the chance to record an episode on 0:00:47.640 --> 0:00:51.520 the show floor inside a c X thirty. And I 0:00:51.560 --> 0:00:55.600 was talking about the concept of human centric design, specifically 0:00:55.800 --> 0:00:59.280 within the context of designing vehicles and even more specifically 0:00:59.320 --> 0:01:01.760 the c X there. So what you're about to hear 0:01:02.000 --> 0:01:04.959 is the audio from that. It was recorded on Friday, 0:01:05.040 --> 0:01:08.160 November twenty second, two thousand nineteen, from the Mazda booth 0:01:08.200 --> 0:01:11.080 at the l A Auto Show. You will also hear 0:01:11.200 --> 0:01:14.959 some audio from a separate conversation with Dave Coleman, who's 0:01:14.959 --> 0:01:18.880 an engineer at Mazda. He's with their research and development division, 0:01:19.360 --> 0:01:21.760 and he talks in more detail about the kinds of 0:01:21.760 --> 0:01:25.319 decisions that go into creating a specific experience, which is 0:01:25.360 --> 0:01:28.200 kind of at the heart of the philosophy of human 0:01:28.360 --> 0:01:31.039 centric design. There are a couple of other notes I 0:01:31.040 --> 0:01:34.800 want to mention before we jump into this. First is 0:01:34.840 --> 0:01:37.920 that this episode was recorded live in the Los Angeles 0:01:38.000 --> 0:01:41.800 Convention Center, and so it's not going to sound like 0:01:42.040 --> 0:01:46.520 the studio recordings. You'll likely hear a lot of extraneous sounds. 0:01:46.880 --> 0:01:49.960 I even comment on it at one point. Another is 0:01:50.000 --> 0:01:53.080 that you may hear some other familiar voices when we 0:01:53.080 --> 0:01:56.800 get to Dave's discussions because Lauren voege Obama Brain Stuff, 0:01:56.920 --> 0:02:00.240 and and savor Uh and Jack O'Brien and Miles of 0:02:00.240 --> 0:02:03.960 the Daily Zeitgeist we're also there at the show, so 0:02:04.160 --> 0:02:07.200 they are occasionally chatting as well. You might hear their voices, 0:02:07.560 --> 0:02:10.399 and I will be popping in from the studio as 0:02:10.400 --> 0:02:13.919 in from where I'm recording right now a few times 0:02:13.919 --> 0:02:16.720 to help kind of bridge a few gaps between Dave's 0:02:16.720 --> 0:02:20.359 discussions and the episode I recorded. So with all that 0:02:20.560 --> 0:02:24.280 business out of the way, let's hear that intro all 0:02:24.400 --> 0:02:28.639 over again, So take it away past Jonathan. Hey there, 0:02:28.680 --> 0:02:32.400 and welcome to text stuff. I'm your host, Jonathan Strickland. 0:02:32.480 --> 0:02:34.800 I'm an executive producer with my Heart Radio and I 0:02:35.200 --> 0:02:39.400 love all things tech and ladies and gentlemen. I am 0:02:39.520 --> 0:02:43.000 having quite the experience right now. I know a lot 0:02:43.080 --> 0:02:45.600 of you listeners out there. You like to listen to 0:02:45.639 --> 0:02:48.320 me while you're in your car. Well, guess what. I'm 0:02:48.360 --> 0:02:52.079 recording this from inside a Mazda c X thirty at 0:02:52.120 --> 0:02:54.880 the l A Auto Show. Yeah. For once, I'm talking 0:02:54.919 --> 0:02:58.359 to you in a car. Let's just let's just hang 0:02:58.400 --> 0:03:02.160 out together for a while, shall we. So today I 0:03:02.280 --> 0:03:06.760 have the incredible opportunity to talk about the philosophy behind 0:03:06.960 --> 0:03:13.520 human centric design. This is something I've always been fascinated by. 0:03:13.960 --> 0:03:17.919 It's something that applies to all elements of design, no 0:03:17.960 --> 0:03:21.800 matter what you are trying to create. But I'm specifically 0:03:21.800 --> 0:03:24.320 going to talk about it in the context of the 0:03:24.320 --> 0:03:27.320 Masda c X thirty because I happen to be sitting 0:03:27.440 --> 0:03:30.520 in the front seat of one, and it is also comfortable. 0:03:30.600 --> 0:03:32.960 This is actually tri I don't know where you are 0:03:33.040 --> 0:03:35.600 right now, but this seat is really good. So if 0:03:35.640 --> 0:03:37.480 you can talk to Mazda and find out how to 0:03:37.680 --> 0:03:39.800 get the seat in the studio to be just like 0:03:39.880 --> 0:03:43.520 this one. That's great, and if you don't, you're fired. Okay, 0:03:43.560 --> 0:03:48.440 So I want to talk about the general principles behind 0:03:48.440 --> 0:03:50.680 design in the first place, and then we'll narrow it down. 0:03:50.720 --> 0:03:54.360 You guys know how my show goes. So let's say 0:03:54.360 --> 0:03:59.280 you're an engineer and you have defined what goal you're 0:03:59.320 --> 0:04:04.080 going for. You've identified a specific goal that you want 0:04:04.120 --> 0:04:08.480 to achieve. And beyond defining the goal, that's obviously one 0:04:08.480 --> 0:04:12.200 of the first big parts of this process. You need 0:04:12.240 --> 0:04:14.120 to figure out what are your objectives and what are 0:04:14.160 --> 0:04:17.680 your challenges, what are the things standing in your way 0:04:17.720 --> 0:04:21.280 of achieving your goal, and you start to make decisions 0:04:21.560 --> 0:04:24.800 to try and get to your goal as best you can. 0:04:25.480 --> 0:04:29.800 Those decisions can sometimes end up having things that conflict 0:04:29.839 --> 0:04:31.279 with each other. You have to find a way to 0:04:31.360 --> 0:04:36.800 resolve those conflicts and to actually achieve the goal you 0:04:36.839 --> 0:04:40.640 have defined for yourself. This is not necessarily an easy 0:04:40.640 --> 0:04:42.680 thing to do. It's one of the biggest challenges of engineering. 0:04:42.680 --> 0:04:44.760 It's why a lot of the engineers I've talked to 0:04:45.360 --> 0:04:49.520 relish their job. They love the process of sitting down 0:04:50.080 --> 0:04:54.800 and going from concept to reality and all the processes 0:04:54.960 --> 0:04:57.440 that go along with that. Now, some of that can 0:04:57.520 --> 0:04:59.200 end up being a lot of trial and error. A 0:04:59.200 --> 0:05:01.359 lot of it can end up being having to to 0:05:01.440 --> 0:05:04.760 retrace your steps, and if we're all being honest, not 0:05:04.920 --> 0:05:08.840 all of it is super fun. Sometimes you try out 0:05:08.880 --> 0:05:11.440 an idea that you were convinced was going to be 0:05:11.480 --> 0:05:13.880 perfect and then you realize that, oh, you know what, 0:05:13.960 --> 0:05:17.000 it's good, but it just broke everything else. So it's 0:05:17.000 --> 0:05:21.040 a very tough process to actually go through. But once 0:05:21.080 --> 0:05:24.200 you have figured out all the different challenges, you defined 0:05:24.240 --> 0:05:27.679 your objectives, you start to ideate your solutions. You start 0:05:27.720 --> 0:05:30.680 to think, this is the way I think is the 0:05:30.720 --> 0:05:33.720 best for me to achieve the goal, and then how 0:05:33.720 --> 0:05:36.320 do I go about actually making that reality. You go 0:05:36.400 --> 0:05:40.000 through that process, which can be laborious, and then you 0:05:40.040 --> 0:05:42.159 test it and you find out how well you did, 0:05:42.520 --> 0:05:46.440 and maybe it turns out that the solution you have 0:05:47.240 --> 0:05:51.200 is incredible on paper, but in reality it turns out 0:05:51.240 --> 0:05:53.960 to fall short. That's something that actually does happen quite 0:05:53.960 --> 0:05:57.799 a bit in all realms of technology, and I've seen 0:05:57.880 --> 0:06:02.480 this a lot in my uh storied career as a 0:06:02.480 --> 0:06:07.400 technology journalist. You see attempts to try and achieve something 0:06:07.480 --> 0:06:11.400 really revolutionary, let's say, and in the process you might 0:06:11.560 --> 0:06:14.599 end up losing sight of what your initial goal was 0:06:14.600 --> 0:06:16.840 in the first place, which was to deliver something to 0:06:17.480 --> 0:06:21.440 an end user, whoever that may be, that is meaningful 0:06:21.600 --> 0:06:25.480 and and produces a specific result. Maybe that the thing 0:06:25.520 --> 0:06:29.400 you've created works really well again on paper, but that 0:06:29.520 --> 0:06:32.880 it doesn't feel like it works really well when you 0:06:32.880 --> 0:06:36.000 get it in the hands of the end user. That 0:06:36.160 --> 0:06:39.719 is what human centric design tries to address. It tries 0:06:39.760 --> 0:06:43.360 to keep in mind that at the end of the day, 0:06:43.680 --> 0:06:47.480 you are making something to create a human experience, and 0:06:47.520 --> 0:06:52.160 that every decision you make ultimately needs to be geared 0:06:52.279 --> 0:06:55.160 toward that. Also, I'm probably gonna be dropping a lot 0:06:55.160 --> 0:06:59.479 of car puns unintentionally. It's just because I'm in this environment. 0:07:00.240 --> 0:07:05.840 So we've talked about that little element of challenge, this 0:07:05.920 --> 0:07:08.800 idea of trying to, you know, I, identify what your 0:07:08.800 --> 0:07:11.400 goal is and to work your way to it. The 0:07:11.480 --> 0:07:14.000 next thing you have to think about is how your 0:07:14.040 --> 0:07:18.360 goal may end up working with, integrating with other goals 0:07:18.440 --> 0:07:22.560 that other people have, or it may conflict with those Because, 0:07:23.000 --> 0:07:26.320 as I'm sure you're all aware, something like a car, 0:07:26.560 --> 0:07:32.240 a vehicle. Uh, it's actually a collection of many different systems. Now, 0:07:32.280 --> 0:07:36.440 each system needs to contribute toward that end goal, that 0:07:36.560 --> 0:07:40.680 human centric goal where you're creating this feeling that you 0:07:40.720 --> 0:07:45.560 want your end user to have. But they don't necessarily 0:07:45.600 --> 0:07:51.560 all work in harmony together natively. You can't expect that 0:07:51.680 --> 0:07:54.720 if you're working, let's say, on a drive train system 0:07:54.800 --> 0:07:57.520 and someone else is working on a different system, that 0:07:57.560 --> 0:08:00.360 those two are just going to magically work together and 0:08:00.480 --> 0:08:03.800 produce the perfect experience when it all comes out at 0:08:03.840 --> 0:08:06.520 the end. You actually have to do a lot of collaboration, 0:08:06.920 --> 0:08:09.840 and sometimes that means that you're having lots of complicated 0:08:09.880 --> 0:08:14.920 conversations weighing your different goals, weighing your different priorities, and 0:08:15.000 --> 0:08:19.000 deciding which ones are going to take priority in one 0:08:19.000 --> 0:08:21.960 case versus another. You might be able to make some concessions. 0:08:22.040 --> 0:08:24.400 You might be able to kind of find a middle ground. 0:08:24.400 --> 0:08:27.559 You might be able to find use cases where one 0:08:27.760 --> 0:08:32.200 philosophy wins out over another. For example, we had a 0:08:32.280 --> 0:08:35.920 chance to talk with a great engineer, Dave. He talked 0:08:35.960 --> 0:08:39.360 about how with the Masta c X thirty, there was 0:08:39.440 --> 0:08:43.120 this balance between performance and making sure that the ride 0:08:43.160 --> 0:08:46.319 was nice and quiet. And the problem is that as 0:08:46.360 --> 0:08:50.040 you start to weigh one of those, the other one 0:08:50.240 --> 0:08:54.920 begins begins to uh end up having needing more attention. 0:08:55.640 --> 0:08:57.880 So you have to figure out, well, where's the balance here. 0:08:57.920 --> 0:08:59.920 We want to make sure that we have all the 0:09:00.040 --> 0:09:02.640 elements here so that we create the feeling that we 0:09:02.679 --> 0:09:06.520 really want our end users to have. And that is 0:09:06.559 --> 0:09:09.840 not something again that is natively obvious. It means that 0:09:09.920 --> 0:09:13.520 you have to have a lot of conversations, a lot 0:09:13.559 --> 0:09:17.839 of collaboration. Uh. And in the case of Mazda, as 0:09:17.880 --> 0:09:20.120 we learned while we were here at the auto show, 0:09:20.720 --> 0:09:23.920 that ends up being a lot easier because the teams 0:09:24.120 --> 0:09:29.320 are more closely located to one another. They aren't spread 0:09:29.400 --> 0:09:32.720 across the globe where you might have one team working 0:09:32.760 --> 0:09:35.440 completely independently of the others. And then when you bring 0:09:35.480 --> 0:09:38.000 all the systems together, only then do you realize that 0:09:38.080 --> 0:09:41.679 you start seeing these conflicts. Hey, it's Jonathan from the 0:09:41.720 --> 0:09:44.440 booth again. But I just wanted to tell you that 0:09:44.480 --> 0:09:46.640 we're going to take a very quick break and come 0:09:46.800 --> 0:09:56.960 right back to the episode, So don't go anywhere, all right, guys, 0:09:56.960 --> 0:09:59.120 it's Jonathan from the studio again. Now I figured This 0:09:59.200 --> 0:10:01.640 is a great spot to insert some audio that we 0:10:01.760 --> 0:10:05.640 captured with Engineered Dave Coleman that really helps illustrate what 0:10:05.760 --> 0:10:09.959 I was talking about earlier on. In this episode, we're 0:10:09.960 --> 0:10:12.080 going to start with Dave giving us the sort of 0:10:12.400 --> 0:10:15.000 mission statement his team had in mind and how they 0:10:15.000 --> 0:10:18.080 went about trying to achieve it. So I guess at 0:10:18.200 --> 0:10:21.000 a high level, what we're trying to do with this 0:10:21.120 --> 0:10:25.480 car is gets something that is we'll let you do 0:10:25.559 --> 0:10:27.160 kind of just whatever it you want to do, wherever 0:10:27.200 --> 0:10:29.760 you want to go whatever. It's not really specifically tune 0:10:29.800 --> 0:10:32.880 to one particular kind of driving. UM. It's supposed to 0:10:32.880 --> 0:10:36.000 be really sort of natural and easy and capable enough 0:10:36.040 --> 0:10:39.680 to to do whatever hurt you're interested in. UM. So 0:10:39.920 --> 0:10:42.800 we wanted to make it so it's it's comfortable and 0:10:42.880 --> 0:10:45.839 quiet every day, it's efficient, it's fun to drive. When 0:10:45.840 --> 0:10:48.440 you go out on twisty road and you want to 0:10:48.480 --> 0:10:51.640 go to some you know, rock climbing place or hiking 0:10:51.640 --> 0:10:53.760 trail and mountain bike and that's way up some dirt 0:10:53.840 --> 0:10:56.520 road that's really tricky. It's got to off road capability 0:10:56.640 --> 0:10:59.960 to get you there too, and it's balancing all the 0:11:00.320 --> 0:11:03.280 kind of the right way is a big trick. Um. 0:11:03.400 --> 0:11:05.800 We're we've been working on some new sort of off 0:11:05.880 --> 0:11:09.960 road capabilities. It's mostly electronic trickery. UM, and sort of 0:11:10.000 --> 0:11:11.839 had to figure out where we draw the line on 0:11:12.120 --> 0:11:15.080 making our cars taple on offer. We've always been a 0:11:15.120 --> 0:11:18.839 completely on road company. Uh, and so we've we've sort 0:11:18.840 --> 0:11:21.680 of drawn the line that, uh, well, there's a lot 0:11:21.720 --> 0:11:23.440 of stuff you can do to make cars super capable 0:11:23.679 --> 0:11:26.000 offer road that ruins how it drives the rest of 0:11:26.040 --> 0:11:28.720 the time. So we've drawn the line that we won't 0:11:28.760 --> 0:11:30.439 do anything to compromise how it drives on the road, 0:11:31.000 --> 0:11:34.480 but we still want all the capabilities to get places. Um. 0:11:34.679 --> 0:11:37.160 And this is the first car that we've got that's 0:11:37.160 --> 0:11:41.880 got an offer button that changes a bunch of the settings. UM. 0:11:41.880 --> 0:11:44.440 So some of the some of the kind of trick 0:11:45.320 --> 0:11:49.720 stuff that we're doing under the skin. UM. We've got 0:11:49.760 --> 0:11:52.200 our new all the drive system and the G Vectorian 0:11:52.200 --> 0:11:55.720 control system, which is a very weird, subtle thing for 0:11:56.120 --> 0:11:58.920 making the car behave in a way that feels more 0:11:59.000 --> 0:12:03.680 natural to people. UM. So we've I'll start with the 0:12:03.679 --> 0:12:07.400 G factor in control. So, UM, we found that as 0:12:07.400 --> 0:12:10.960 you're driving, the very first moment you make the steering 0:12:10.960 --> 0:12:13.319 input The cars are a little bit Every car is 0:12:13.320 --> 0:12:15.040 a little bit inconsistent about how it makes that first 0:12:15.080 --> 0:12:16.839 bit of the turn. And the reason is because you're 0:12:16.840 --> 0:12:21.400 sitting on these theneumatic tires. It's just a balloon, right Uh. 0:12:21.440 --> 0:12:25.199 And in its straight ahead state, both sidewalls are sort 0:12:25.200 --> 0:12:29.120 of unloaded, and when you corner, one of sidewall goes 0:12:29.160 --> 0:12:31.400 slack and one starts pulling, and that's what's pulling the 0:12:31.440 --> 0:12:33.720 car in the corners. So there's this transition period as 0:12:33.760 --> 0:12:37.600 the car starts to transition into that corner, and that's 0:12:37.640 --> 0:12:40.640 where things are kind of the most nervous for the 0:12:40.720 --> 0:12:42.800 driver's subconscious as they kind of DESI will when do 0:12:42.880 --> 0:12:44.920 I turn and how much do I turn? And once 0:12:44.920 --> 0:12:46.880 you get into the corner and everything feels naturally, you 0:12:47.120 --> 0:12:50.920 figure out what you're doing. But people aren't really consciously nervous. 0:12:51.000 --> 0:12:53.200 But if you watch someone's steering inputs as they turn 0:12:53.240 --> 0:12:55.280 into a corner, a lot of times they turn in 0:12:55.280 --> 0:12:57.280 and back off and adjust a couple of times because 0:12:57.320 --> 0:13:00.439 they get it figured out. Uh. And so designed the 0:13:00.480 --> 0:13:04.560 system to try to attack that subtle problem that people 0:13:04.600 --> 0:13:08.319 didn't know they were doing. Um. And what we do 0:13:08.559 --> 0:13:10.439 is we figured out that we can we can wait, 0:13:10.960 --> 0:13:12.720 but a little bit more weight on the front tires 0:13:12.760 --> 0:13:15.280 just as you turn. Uh. And this is a trick 0:13:15.360 --> 0:13:19.040 that we learned from race driving. Um I used to 0:13:19.080 --> 0:13:22.280 race rally cars racing off road in the gravel, and 0:13:22.679 --> 0:13:24.960 the rally drivers always using the left foot on the brakes. 0:13:25.200 --> 0:13:26.480 You turn the wheel and put a little bit of 0:13:26.800 --> 0:13:28.640 extra weight on the front tires and it makes them 0:13:28.679 --> 0:13:31.600 grab into the into the grab or turn the car. UM. 0:13:31.640 --> 0:13:33.280 A lot of broad racing guys will do this to 0:13:33.360 --> 0:13:34.840 one foot on the gas, one foot on the brake, 0:13:35.080 --> 0:13:36.880 unlike on the street where you're left foots on the 0:13:36.880 --> 0:13:39.920 clutch or just resting. But you've got one on each 0:13:39.920 --> 0:13:42.440 of you can you can constantly adjust the weight balance 0:13:42.440 --> 0:13:44.760 of the car. So we started sort of from that 0:13:44.960 --> 0:13:47.600 idea and tuned it and tuned it and tuned it, 0:13:48.600 --> 0:13:50.680 trying to make it so it's so subtle. You don't 0:13:50.760 --> 0:13:53.680 feel the car slowing down to shift weight under the front, 0:13:53.760 --> 0:13:55.800 but you do feel the response in the way the 0:13:55.840 --> 0:14:01.679 car turns. Um And now we've got a tune. So 0:14:01.960 --> 0:14:04.040 there's steering system. As you turn the wheel, the electric 0:14:04.040 --> 0:14:07.000 power steering knows exactly what the put you're giving it, 0:14:07.160 --> 0:14:10.119 so it looks at the steering speed and that communicates 0:14:10.120 --> 0:14:11.880 with the engine computer and it tells it to reduce 0:14:11.920 --> 0:14:15.280 power just a hair and it dips a little bit 0:14:15.280 --> 0:14:17.120 of extra weight onto the front tires and tightens up 0:14:17.160 --> 0:14:21.760 the tires so they respond more directly. Um, we don't 0:14:21.760 --> 0:14:24.280 have any on off switch for that. They'll never feel it. 0:14:24.000 --> 0:14:25.840 It's it's soon so well that it just kind of 0:14:25.920 --> 0:14:28.960 just feels normal all the time. Right. We've built a 0:14:28.960 --> 0:14:31.440 couple of cars with on off switches for that, and 0:14:31.480 --> 0:14:34.800 it's it's really funny because it's it's it's not super obvious, 0:14:35.440 --> 0:14:38.120 but it's once you kind of pick out what it's doing, 0:14:38.600 --> 0:14:41.240 it actually makes a difference even just driving completely straight ahead, 0:14:41.520 --> 0:14:44.040 because you don't realize is when you're driving straight you're 0:14:44.040 --> 0:14:46.960 making constantly making little corrections, right, and if each one 0:14:47.000 --> 0:14:48.640 of those has a little delay, and then to catch up, 0:14:48.680 --> 0:14:51.720 you're you're constantly overshooting and coming back. And as soon 0:14:51.760 --> 0:14:54.440 as we turn the system on, people just just settle 0:14:54.520 --> 0:14:56.960 up because they make repression and would stick and they 0:14:57.000 --> 0:14:58.360 wouldn't have to make the next one of the next 0:14:58.360 --> 0:15:02.280 one and the next one. Um. So that's in all 0:15:02.280 --> 0:15:06.400 of our cars now. Um that that's called g Vactric control. 0:15:06.440 --> 0:15:09.640 We just came out with the electric control plus which 0:15:09.920 --> 0:15:13.360 helps when you start straighten the wheel back out, um, 0:15:13.440 --> 0:15:17.080 and the the car will sometimes be a little bit 0:15:17.120 --> 0:15:18.920 slow to kind of come backing up the pull wheel 0:15:18.920 --> 0:15:21.680 straight and so to avoid that, we actually will drag 0:15:21.760 --> 0:15:24.600 the outside break just a hair and it suddenly just 0:15:24.680 --> 0:15:26.960 kind of kind of helps it straight back out. You 0:15:26.960 --> 0:15:29.040 don't again, you don't feel a break when you can 0:15:29.040 --> 0:15:30.840 switch it on and off. What you feel is it 0:15:30.920 --> 0:15:33.080 feels soally normal. And then if if you were to 0:15:33.120 --> 0:15:35.800 switch the system off, you feel like steerings kind of 0:15:35.800 --> 0:15:37.800 going yeah, gun, yeah, gun's a good but yeah, it's 0:15:37.800 --> 0:15:39.240 just kind of overdamped and you kind of have to 0:15:39.280 --> 0:15:43.000 pull it back. Um. So we're really kind of down 0:15:43.000 --> 0:15:45.320 in the weeds of these little subtle details to get 0:15:45.360 --> 0:15:49.120 the car to feel natural and to feel totally almost 0:15:49.120 --> 0:15:50.680 so you don't notice all the work we did, right. 0:15:52.240 --> 0:15:55.680 Is there like a general like description drivers have that 0:15:56.040 --> 0:15:58.120 like now that this stuff has been corrected, or do 0:15:58.240 --> 0:16:03.120 they just like say it's smoother, like you know, we've 0:16:03.160 --> 0:16:06.200 always had a focus on this kind of area. Um, 0:16:06.480 --> 0:16:09.120 so we've always sort of tuned our cars to feel 0:16:09.240 --> 0:16:11.120 just feel right and just feel until it used to 0:16:11.160 --> 0:16:13.680 be our slogan decades ago. It just feels right right. 0:16:13.720 --> 0:16:15.760 That's It's we've kind of always been trying to do 0:16:15.800 --> 0:16:20.400 the same thing. Um. So I don't think adding GBC 0:16:20.640 --> 0:16:23.280 wasn't like a dramatic change. Was another tool in our 0:16:23.320 --> 0:16:25.040 toolbox of all these things that we're trying to do. 0:16:25.160 --> 0:16:26.600 If we took this system and put it on the 0:16:26.600 --> 0:16:28.800 car built by people who didn't care about this stuff, 0:16:28.800 --> 0:16:31.280 it wouldn't be enough to pick it right, but it's 0:16:31.360 --> 0:16:34.120 enough to sort of add in our direction of making 0:16:34.120 --> 0:16:39.400 the car, you know, more natural. Um. Sort of our 0:16:39.480 --> 0:16:42.400 our ind goal is to make driving a car so 0:16:43.400 --> 0:16:45.840 naturally you don't think about it. You're just you just drive, 0:16:46.040 --> 0:16:49.080 just do exactly what you wanted to do. Um. The 0:16:49.080 --> 0:16:54.160 whole wheel drive system in this car we mechanically is 0:16:54.200 --> 0:16:56.640 the same as almost everybody's. You drive the front wheels, 0:16:56.880 --> 0:16:58.720 there's a clutch where you can connect the rear wheels 0:16:58.800 --> 0:17:01.440 sometimes when you need it and not when you don't. 0:17:01.880 --> 0:17:03.800 And all the magic is in the software to figure 0:17:03.800 --> 0:17:06.479 out when you need it when you don't exactly how much, right, 0:17:06.520 --> 0:17:09.000 because if you're always driving the rear wheels, it uses 0:17:09.000 --> 0:17:12.159 a lot of extra fuel and it actually UM diffront 0:17:12.200 --> 0:17:13.680 reules have to go to the same speed when they're 0:17:13.720 --> 0:17:15.600 locked together, and so the car doesn't want to turn, 0:17:16.600 --> 0:17:18.880 and so you're always balancing its ability to turn with 0:17:18.920 --> 0:17:23.400 its ability to drive the rear wheels. UM. We've come 0:17:23.440 --> 0:17:26.680 up with a system where we're running software algorithm that's 0:17:26.720 --> 0:17:29.440 basically kind of like a video game algorithm that's looking 0:17:29.480 --> 0:17:33.400 at the vehicle speed and cornering G acceleration G hand 0:17:33.400 --> 0:17:35.760 calculating exactly how much loaders on each tire based on 0:17:35.800 --> 0:17:39.280 the vehicle dynamics model of how this car behaves. And 0:17:39.320 --> 0:17:43.040 so it's constantly calculating what load is on each tire 0:17:43.280 --> 0:17:46.680 and then distributing torque where it's needed to take advantage 0:17:46.680 --> 0:17:50.800 of that UM, which means that this actually can expand 0:17:50.800 --> 0:17:53.520 the performance envelope even on dry paving, not just in 0:17:53.760 --> 0:17:57.960 you know, wet or slippery conditions. UM. And that lets 0:17:58.040 --> 0:18:03.520 us use the OL wild drives to an advantage without 0:18:03.880 --> 0:18:06.119 using it in places but we don't need it waste 0:18:06.160 --> 0:18:10.680 fuel right UM. And then there's a couple of places 0:18:10.720 --> 0:18:12.840 where those two ideas the g vactor control trying to 0:18:12.880 --> 0:18:15.120 get the car turning in precisely, and what the oil 0:18:15.200 --> 0:18:17.880 drive is doing where they don't get along where we're 0:18:18.000 --> 0:18:20.360 If we're driving the rear wheels at a certain time, 0:18:20.680 --> 0:18:23.280 it will make the car resists turning in because they're 0:18:23.280 --> 0:18:25.440 trying to go the same speed. And so we have 0:18:25.560 --> 0:18:27.879 to integrate those two systems so that the g vactor 0:18:27.920 --> 0:18:30.000 control gets the authority right at the moment that it 0:18:30.080 --> 0:18:32.480 needs the car to turn. And then when you're steady state, 0:18:32.520 --> 0:18:34.480 it goes back and sends more to the rear, and 0:18:34.480 --> 0:18:36.440 then it straights back out and can even drag a 0:18:36.480 --> 0:18:38.879 little bit more to the rear to help. So it 0:18:38.920 --> 0:18:41.680 is a really complicated interplayoffs software to get all these 0:18:41.680 --> 0:18:44.120 systems and the cars to talk to each other. Uh. 0:18:44.119 --> 0:18:47.439 And it's it has to to get it to work 0:18:47.840 --> 0:18:51.879 at the speed that our mind is processing things so 0:18:51.920 --> 0:18:55.480 that it feels so that we were really fast in 0:18:55.880 --> 0:18:59.400 what we can recognize, UM. So to to make it 0:18:59.440 --> 0:19:01.680 so we don't feel that it's doing something, but it 0:19:01.760 --> 0:19:03.920 just feels seamless, and it feels like as one unit. 0:19:04.240 --> 0:19:07.160 We had to redo a bunch of the computer hardware 0:19:07.160 --> 0:19:10.600 in the car to communicate faster, to get the signals 0:19:10.600 --> 0:19:13.360 from the steering into the into the thing that makes 0:19:13.359 --> 0:19:15.280 the decisions, and then into the into the e c 0:19:15.440 --> 0:19:18.399 U two from the to change the engine, now putta 0:19:18.480 --> 0:19:22.240 to change the all world drive. Um, if I remember right, 0:19:22.240 --> 0:19:24.879 I think we've got fifty milliseconds from steering input before 0:19:25.000 --> 0:19:26.720 something has to happen at the other end or else 0:19:26.840 --> 0:19:29.640 people will notice. All right, Jonathan from the booth again, 0:19:29.680 --> 0:19:32.960 we're going to rejoin Dave a little further into that 0:19:33.000 --> 0:19:35.400 conversation he had with us. You know, we talked about 0:19:35.400 --> 0:19:37.280 a lot of stuff in that conversation, not all of 0:19:37.320 --> 0:19:40.720 it pertains kind of to this human centric design concept, 0:19:41.160 --> 0:19:42.920 but he gave us a little more insight into the 0:19:43.000 --> 0:19:47.040 challenges behind making the interior of a vehicle quiet without 0:19:47.240 --> 0:19:51.320 making it too quiet. Again, this gets to that concept 0:19:51.440 --> 0:19:54.879 of you want to make an experience for the end user, 0:19:55.320 --> 0:19:57.960 but you have to make sure you're giving the right experience. 0:19:57.960 --> 0:20:01.480 It's not just an experience, but the correct one. So 0:20:01.520 --> 0:20:04.160 we learned there's a very delicate balance to all of that. 0:20:04.440 --> 0:20:08.080 Here's Dave to explain a little further. Hopefully the first 0:20:08.080 --> 0:20:10.760 thing I'll notice is that it's quiet. You know, that 0:20:11.000 --> 0:20:13.159 used to be a weak point of ours. Because well, again, 0:20:13.720 --> 0:20:16.560 steering handling and n VH guys are fighting each farther, 0:20:16.680 --> 0:20:18.520 and we always wanted our cars to handle really well 0:20:18.560 --> 0:20:21.520 and sort of trying to elevate ourselves to the point 0:20:21.560 --> 0:20:23.200 where we can have the steering handling and have the 0:20:23.240 --> 0:20:26.080 car drive right and still be quite uncomfortable. I'm recognizing 0:20:26.080 --> 0:20:29.399 how important that is. UM. We've sort of expanded our 0:20:29.560 --> 0:20:34.800 our performance envelope and a lot of looking at sort 0:20:34.800 --> 0:20:37.680 of how people hear things, what frequency ranges matter to them, 0:20:37.680 --> 0:20:40.720 and what how it actually affects people. Um. And one 0:20:40.720 --> 0:20:43.040 of the things we've started figure out is that we're 0:20:43.119 --> 0:20:47.840 super sensitive to direction of sound, which means that if 0:20:47.880 --> 0:20:50.040 you hear, if the sound does get into the car 0:20:50.680 --> 0:20:53.240 and then uh, you hear reflect off the other window, 0:20:53.240 --> 0:20:57.000 you'll pick up that reflection, maybe not consciously, but it 0:20:57.080 --> 0:20:59.639 bothers you more than that same amount of noise just 0:20:59.680 --> 0:21:03.359 coming one high. So we put more damping into the 0:21:03.359 --> 0:21:05.639 car so that found from do get in damp out quickly. 0:21:05.840 --> 0:21:11.480 It should be good for recording, right right. UM. And 0:21:11.560 --> 0:21:14.760 we've also worked really a lot on isolation from outside noises, 0:21:14.800 --> 0:21:16.480 so you don't hear the car next to you so much, 0:21:16.800 --> 0:21:19.440 and that We're trying to strack a balance because if 0:21:19.480 --> 0:21:24.560 you isolate too much, it's you don't practical reason became 0:21:24.640 --> 0:21:27.280 the Siren's But also at a more subtle level, you 0:21:27.480 --> 0:21:31.320 don't feel connected to what you're doing well, and you 0:21:31.480 --> 0:21:33.480 you feel like you're not really controlling the car. You're 0:21:33.520 --> 0:21:36.320