I think I follow your point
@66tim99 , in that there's more to just the size of the screen.
In this case we are doing two very different things, both inputting data, and reading data. So both need looking at.
If there are controls on the steering wheel and ideally voice then that solves part of the problem, you're right.
If you still need to stare at the screen to get vital information then thats the other part of the problem that needs fixing.
In my current car (Volvo XC60) there is a huge screen and some things must be done on that touchscreen, like zooming in and out of a map. Crazy bad design for a company at the forefront of car safety.
The best thing is that the heads-up display shows the most important navigation info which is why I like it.
The worst things are it's too slow for real-time traffic info, map updates are rare, the voice control of maps is awful, and as said you must use the touchscreen to perform certain essential functions.
I can plug in android auto to fix those negatives, but then lose the heads-up (so have to look down to the screen), and still have the issue of needing to use the touchscreen to zoom in and out, re-center, that sort of thing.
Warning: Old man moan alert:
Old stereos allowed the user to learn where the buttons go and reach out to them without needing to look, you could just fumble around and do what you need. I think around year 2000 Audi had a sat nav which didn't really have any screen, just arrows in the main dial console which someone was sufficient. Perfect.
I think that's where we need to get back to, hybrid style, input via voice and buttons, and new (or maybe old) ways to present the information to the user. Heads-up display would be one way.
Instructions are always read-out, that's fine, maybe more information could be read-out and be more interactive. Perhaps the advancement of natural language processing in artificial intelligence will take the lead there.