The regulation calls out 19 vehicle functions which must have physical controls inside the vehicle, with additional requirements about size and usability of the buttons.
Those functions include:
Turn signals
Hazard lights
Horn
PRND gear shifter
Driver assist function, if present
Windshield wipers
Windshield defroster
Power windows
Emergency call system
Power off switch for EVs


I think being able to see out of my windshield instead of having it fog up is pretty essential to driving
Defogger is physical
This person doesn’t know about driving, because they’re clearly 12.