These are some interesting points, but we can look for a peek into the future with airplanes which communicate through anticollision computer systems. I'm not a

These are some interesting points, but we can look for a peek into the future with airplanes which communicate through anticollision computer systems. I'm not an aviation person, but I believe the actual collision avoidance must be performed by a human being, however the devices themselves communicate with one another to determine the corrective flight path. Also, you can enforce cars with directives to save "the most" lives with policy and law. Of course people are going to buy the crowd-plowing car if it saves their own asses. That's why you make it difficult or impossible to buy a car that will do this, instead only authorizing cars that make the better choice to drive the streets.