“I've come up with a set of rules that describe our reactions to technologies: 1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works. 2. Anything that's invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it. 3. Anything invented after you're thirty-five is against the natural order of things.”

It'll be very interesting to see where it goes. One of the discussions I've had with friends is the extent to which private ownership of cars goes from near-universal to niche. Reactions are all over the map, but my personal bet is that a lot of the kids who grow up with the idea of autonomous cars will never develop that very American attachment to personal car ownership.