> Ride-sharing apps should be allowed to take over the market - until they too are disrupted by self-driving cars. And so it goes.

There are a large number of technical and political hurdles before driverless taxis will be possible. We will need autonomous vehicles on the road for many years for legislation to adapt and for people to become comfortable with the driverless concept from a safety and liability standpoint. Still, I'm with you that it is inevitable, and very exciting.