Uber's work on the self-driving front isn't just for publicity purposes. It's a must-do that will be well worth the investment. Twenty years ago, the notion of anyone using their own vehicle to drive a complete stranger from point A to point B seemed laughable, while self-driving cars were mostly the stuff of science fiction. What a difference just a few years makes. Now, largely thanks to Uber Technologies (UBER -3.77%), ride-sharing is quite common, and autonomous vehicles are a reality. They're even bein ...