This made me think, having once been rear-ended by another vehicle doing 60mph, over 30yrs ago, I automatically look in my rearview mirror when coming to a stop to make sure any vehicle behind me also shows that they are slowing.
Wouldn't it be nice if you could have the 3 rear cams automatically come on the display? Make it an option like Joe Mode? Like SlimJim mentioned there seem to be a rash of rear-ended 3s lately. Whether it's at speed, or even those odd situations where distracted drivers let their feet off the brake and creep forward. Even better would be if the car gave you an alert if the car behind was creeping while you are stopped. Anyway, that's my thought this morning.