> I think it will happen but only by making many expensive, intrusive changes to our cities and roads to accommodate "self-driving" cars. We could put some met

> I think it will happen but only by making many expensive, intrusive changes to our cities and roads to accommodate "self-driving" cars. We could put some metal guides in the ground so they can follow that path. We could then separate that path from other obstructions with barriers, maybe put some tunnels in the ground that keep other people out. And have signals that indicate when the "self driving" stuff is going to interfere with other roads, so nobody gets in the way! "Totally change cities to meet the requirements of self driving cars" sounds an awful lot like "Just put rails in and call it a train."