Earlier quoted context omitted.
What was annoying about it?
Not OP, but I can hazard some guesses: * Very few people drive the speed limit, so you're now stuck at being the slowest car on the road. (This will still be a problem under this law because new vehicles are the only ones affected.) * Inaccurate/out of date speed limits. * Impossible to pass anyone on a two lane road. * Having the car take over control is very disorienting for a skilled driver who expects the machine…
This is by far the most dangerous part. When you're on a freeway where everyone is driving 80-85MPH and you are driving the speed limit of 65MPH, you are the danger to the road. Speed may make accidents deadlier, but the speed differential (whether positive or negative) is what causes accidents. I would not be willing to drive on any of the major Bay Area interstate highways with a car limited to the speed limit. It would absolutely cause an accident eventually.