Public transportation has a long life ahead of it. autonomous vehicles will never be as inexpensive as public transportation.

Similarly, high speed autonomous vehicle roadways won’t happen anytime soon. At least not in great numbers. Most all roads will continue to share the roadway between driver and driverless cars, and ya can’t have super fast speeds with that combination.

What I’m waiting for is the super-traffic-jams when all autonomous vehicles decide to take the same path, get in the same lane, etc. Yeah sure they can program things otherwise in the long run, but in the near term I bet we see some really weird phenomena out there.