[OldHand2018]

I have an Audi - the button to turn it off and on is at the tip of the turn signal stalk. You can toggle it with your pinky without removing your hands from the steering wheel or eyes from the road.

I also have a Subaru - turning it off or on requires three levels of menu navigation, and you have to use the center console touch screen.

I suppose they do their testing and validation in drastically different environments!