Taxis and Uber drivers in San Francisco need to move over because nothing beats self-driving cars. Google is now joining into the ride sharing craze. You need an app called Waze which will connect passengers with other people going in the same direction. Chances are that you'll still share the vehicle with multiple passengers. The upside? Less people means lower costs per person, and Google is not taking a cut.
For now, this service still requires a human driver, but Google is one of the top companies to develop driverless cars, so you can be sure that automated cars are on the horizon.