Why not just physical buttons below (or next to) the screen, like they sometimes do (badly) on ATMs? They used to do this on the old Nokia phones before touchsc

Why not just physical buttons below (or next to) the screen, like they sometimes do (badly) on ATMs? They used to do this on the old Nokia phones before touchscreens too. Would be cheaper than separate OLED displays on every switch. You could even have assignable physical buttons on the steering wheel, with a HUD on the dash that shows what each button will do. There's lots of different options and a touchscreen is the absolute worst one.