Who will win the self-driving race? Here are eight possibilities

The self-driving technology industry is in a strange state right now. A number of companies have been pouring millions of dollars into self-driving technology for years, and many of them have prototype self-driving vehicles that seem to work. Yet I know of only one company--Waymo--that has launched a fully driverless commercial taxi service. And I only know of one company--Nuro--that's running a driverless commercial delivery service on public roads. You'd expect these companies to be capitalizing on their early leads by expanding rapidly, but neither seems to be doing that.