Time sharing of self-driving cars will be very inexpensive. Biggest cost now is drivers. Think about how little time utilization most cars get. That blurs the

Time sharing of self-driving cars will be very inexpensive. Biggest cost now is drivers. Think about how little time utilization most cars get. That blurs the line between public and private, in a good way. In tandem to self-driving, electric car hardware keeps getting cheaper. Projected lifetimes keep getting longer. So the economics are going to trend better for quite a while.