You'd think that it would be mandatory since power windows die the moment you crash your car into water.
Why would they die immediately? They're still connected, the battery still has juice, water usually isn't an impediment to electricity, and there's usually a timer on the windows.
Personally, I think the electronics on vehicles are getting out of hand. If you're too stupid to operate a car, you're too stupid to operate a car.
My work Suburban had the light go out behind the speedometer: the part was about $650, a whole cemented-LED module. Now the third brake light is out: about $265.
I wonder if you can special-order a car that isn't built to outsmart the driver and boost the manufacturer's income?
Sue