I've come to the realization, at least where I live, that a hell of a lot of accidents are prevented because of drivers who are actually aware and safe. This goes a bit beyond defensive driving IMO. I'm talking flat out accident avoidable. There is an entire class of drivers who are not even aware of the accidents they have almost caused because someone else managed to avoid their stupid driving.

The majority of accidents that are likely to happen with these robocoffins will be single car or robocoffin meets robocoffin. The numbers on safety after a year will be acceptable because non accident causing error prone driving is not reported in any official capacity.

I still maintain that the only safe way to have autonomous vehicles on the road is if they do not share the road with human drivers and have an open standard for communicating with other autonomous cars.