> “No touch screens” isn’t the optimal configuration
[citation needed]
> Instead, you want buttons on the dash or wheel for commonly used actions,
Yes.
> and you want less common actions on a nice large touch screen that also functions as a good GPS screen.
No, I don't want a whole second set of controls tossed willy nilly into an entirely different physical interface as a second-class afterthought because the designers were too lazy to figure out how to do it properly with physical controls. Consoles like the XB1 and PS4 have been doing fine building gamepad-driven user interfaces with a relatively limited number of physical inputs, no touchscreens required. Yes, including such things as scrollable menus. And given the disappointing nature of bespoke car GPSes (my current one can't even handle my home address!) I'd honestly prefer a proper phone dock replacing that touch screen, and allowing my car's manufacturer to focus on their core competencies, and allowing me a modular choice for handling what the car lacks.
> [...] gives significantly more customization opportunity than pure physical controls allow.
A power which is used for evil far more than it's used for good. "Customizable" and "bespoke and standardsless" are synonymous here. The limitations and constraints of physical controls are a wonderful forcing function that made for more consistent, tactile interfaces, that will inevitably be skipped over for some gauche touchscreen based vomit whenever there's an opportunity to do so.