[gibsonf1]

The difference would be frequency of injury and/or death as AV cars can't think and react dynamically to non-pattern situations.

[wutbrodo]

Sure, and they can't get drunk or fall asleep either. Even for taking for granted that AVs can't find an operating domain in which "non-pattern situations" are covered by failsafes, it's far from obvious that the net advantage goes to human drivers.