I've owned a Model X for six years now and while Tesla's touchscreen UI is probably still the best in the industry, it is so surprising how many simple fundamentals of interface design they are not getting right.
I'm a UI designer myself and had some fun making this prototype that shows how easy it would be for car makers to improve usability and safety of their interfaces by making better use of the screens in their vehicles.
This won't eliminate the other downsides of touch interfaces in cars, but if we're stuck with them anyway, they might as well be as good as they can be.