I agree with most of your post, but I'd like to point out that as more and more traditional cars are replaced with robots the possibility opens up for creating

I agree with most of your post, but I'd like to point out that as more and more traditional cars are replaced with robots the possibility opens up for creating communication protocols between highway infrastructure controllers and vehicles. Vehicles communicating with each other and their surrounding infrastructure. Imagine coordinated intersections that don't need traffic lights. The capability of the system would increase as more nodes are added. Kind of like the Geth from the Mass Effect series.