"I have no doubt that one day, self driving cars will be better at driving than humans ever were."
Possibly, but at least in the beginning, the roads will need to evolve to accommodate autonomous cars. Where I live there is pavement, dirt and a varying combinations of both with not much in the way of painted striping that isn't a long lost memory that only a trained archeologist could find. Coupled with winds that can blow drifts of dirt over even the paved sections, an autonomous car doesn't have a chance. Sand, snow and heavy rain can lead to needing the more flexible human brain to determine where the road is. The cues that people can use aren't going to be valid for a silicon brain so methods will have to be implemented so autonomous cars remain on the road.