Reverse Camera should stay on until car has come to a complete stop
You've almost had it happen to you - you're backing up, looking at the rearview camera, then you touch the brakes and flip the gear selector to Drive. The camera goes away, but the car's still backing up. A second later, you hear the sound of the car hitting something.
Let's make this history by having the rearview camera only disappear when the car has come to a stop, or the system detects that velocity is forward-going again. We can get into this state because the car doesn't require you to completely stop to shift from R -> D, a tap of the brake is sufficient.