Not sure it helps this discussion- but I personally make a large distinction between the sitting/playing/charging UI, and the driving UI.
I've done a lot of UI work in software myself and worked at Apple for a very long time, so I have some background and expectations about what works and what does not.
The sitting/playing UI is perfectly OK. Stuff is a little weird and hard to find, but overall it's a tablet UI and I think not a surprise to anyone. With the current UI fads being grey-on-grey and the point-and-click adventure for finding out what is live, instead of visually showing you what is live. The current fad is to emphasize white space, which makes readability suffer.
However- I think the driving UI is completely, measurably, horrible and makes the car more dangerous to drive than it should be. The driving UI has clearly not had any usability testing or user-group testing. You know, like Apple does.
Can we agree that looking away from the road for extended times is bad? I want to be able to see at a glance, what I need. I want to be able to make actions like wipers/lights/defogger/AC happen without having to hunt down UI elements. I want geographic stability for elements that I need while driving so that I don't have to visually search for what I need.
The Telsa UI fails in all aspects from a driving standpoint because they either don't care, or don't actually drive test it. Smallish buttons with grey on grey and small fonts. Hard to read at 70 mph glance. Extremely hard if you are over 45 and have presbyopia. There is no reason for everything to be small, low-contrast, and with tons of white space, while driving. Small buttons that are hard to hit with your hand bouncing around and swaying in the air.
The climate controls pop up when I hit the temperature- OK. Now while driving I have to look back at the road and stay focused. Look back, the climate panel has auto hidden. Thanks. Same with the wiper controls and high beam controls. Why do they hide, and why is the timeout so poorly chosen?
There is a bong for something to look at, and I'm busy actually driving and can't look right then. If I do get a chance to look it's this tiny oval with inscrutable text. If it was important enough for a bong, it's important enough for a large font. And that's if it stays up. Half the time it's gone by the time I look and I never know what happened. This is... not a good UI while driving. The UI should not be actively distracting me from the job of driving.
One last thing on the horrible driving UI. What's with wasting fully 1/3 of my most important screen for that stupid and useless driving animation? I'm driving! I don't have time to look at your stupid animation, and I honestly don't care what the car can see, ever. I don't understand why this is considered so important that it is always the primary focus of the UI.
That space could be used for larger, static controls. No hiding, geographic stabilty so I can get a muscle memory. Large enough to hit with waving/bouncing arms. Large enough to identify with a glance. But instead- white space with flickering animations I see in my peripheral vision.
It's not a UI designed for driving.