I think Google should continue with its self-driving effort. They have their maps and fiber technology that provide some hard-to-get pieces of the puzzle. This is the robot that will impact humanity the most. An automated box on wheels (seats optional). Just think of the things a self driving car could do for you:

- Pick up anything from mostly anywhere.

- Schedule pickup around the clock.

- Move things/people securely and be able to track the contents through a camera.

- Act as a mobile living space. Not requiring a dashboard frees up a lot of space.