Waymo (Google) has plans to introduce driverless cars on the public streets of Phoenix as soon as a couple months time, possibly even in what remains of 2017.
GM is also conducting self-driving tests here in Phoenix, as is Intel and Uber. As someone who is in this industry, let me tell you something: we will be seeing completely driverless cars in 2018. Not on a major scale, and none of these companies will transition their entire fleet into driverless vehicles, but each has plans to do several cars. It's an arms race.
The future is now