that's not a given at all. maybe for computer keyboards I guess, but not for cars.
car makers always seem to want buttons to be flush with their surroundings and have no bumps or dips on them to help you find the button you're after. I always have to look for the button if it isn't on my steering wheel, and I usually have to look when it's there as well.
the only control in my car I don't ever need my eyes to find and use is the volume knob for the entertainment system. maybe the hazard button, too, but I haven't needed to push it yet.