Well, to control things, you'd have to have a highway that's only for self-driving vehicles. And then you'd need to get them there - with what, human drivers? (

Well, to control things, you'd have to have a highway that's only for self-driving vehicles. And then you'd need to get them there - with what, human drivers? (losing the cost savings) Maybe you could use this for self-driving trucks between freight depots. The problem with this is - why not just use trains at this point? Trains already an economical solution for point to point transportation.