This appears to be a vehicle interface designed by someone who doesn't actually drive much.<p>When driving, you often care about acceleration as much as speed. Digital displays are horrible for indicating first and second derivatives; analog dials are great for first and adequate for second.<p>The best UI on a car I've seen (as far as actually driving it) is the Audi -- a Driver Information Display directly in line with the driver (showing next turn), and a center area. There's a reason for going for all-red indicators -- night vision. In rural areas, you often dial down the brightness of all controls to preserve night vision in case an animal or debris is in the road. If you're on I-5 driving from Seattle to SF, there aren't a whole lot of turns, so your nav system is really secondary (if on at all), and there's no reason for it to be in your line of sight.<p>For great designed interiors for drivers, I'd look to Audi, Porsche, and go from there.<p>When driving, I'd consider audio nav information to be primary, followed by simple next turn information, followed by a (north-centric, vs. vehicle bearing) map. 95% of the time the only nav info I need is "left turn in 200 meters, 100 meters, 50 meters, now", since I'm focused on other cars rather than my display. It's only with complex intersections (roundabouts, 5-6 way intersections where grids overlap, etc.) that I need to see the display.<p>Audio is inherently more minimal than visual information, so a car really needs to get it right. Simple things like the order of words in notifications, how frequently they happen, tones vs. words, etc. make a huge difference, and require design vs. advanced graphics to get right.