I suspect rearview camera/sensors are far better protection against bulldozing than small cars. No car is small enough to show a toddler under your tires.
Off subject, but I'm surprised better rear view cameras/sensors are not being manufactured right now. I'm not talking about just a camera though.
Could anyone imagine a a smart camera, with a display. The camera/computer would assist the driver in seeing better at night. Would calculate the odds of a police cruiser behind you. Would warn of potential danger, like an animal on the side of the road. Would warn you if you are being followed. Would be so well designed, you still used your rear view, but kicked in at the needed times? Would map out likely spots police hide? Could even be tied into physiological body sensors? "Today is not a good day to drive? Watch out for ice. Watch you temper?"
The camera/sensors would have to be easily installed, like a stereo?
I would buy one if programmed right, and the cost was justifiable.
Then again there's someting beautiful about a simple chrome rear view mirror. A driver knowing they need to drive with all senses fully engaged, with no assistance other than experience, and good coordination.