I mean, even in low cars you cannot see a small enough kid walking behind your car. That's why you back slowly. Back when I just got my driver license, there is a big lesson many drivers go through (in Italy) which is you back off a parking and there is an obstacle that's so low that cannot be see through the back window and it's small enough that cannot be seen through the mirror. You hit it and if you followed the "go slow part" you only damaged the paint.

So I'm not opposing the ideas of rear cameras, but I'm totally against tall cars, because you cannot see kids IN FRONT either now.