Interesting point.
I guess it will only be an issue during the transition phase, once it's all Johnny Cab... no speeding!
My drive to work yesterday would have been a good test for an autonomous vehicle....
On a three lane divided expressway posted at 55mph for the entire length of the road- I was doing 66mph in the right lane. People in the middle and left lanes were literally blasting by me like I was standing still. At work I commented to an associate who drives the same road- he said he was doing 87mph in the left lane and they were right up his butt at 32mph over the 55mph posted speed limit... a few even blasted by him too he said.
What would the autonomous vehicle do in a case like that?