It's pure speculation as to how quickly it will even happen. I can imagine a forum similar to this one back in the 60's, 70's or 80's talking about how cold fusion will revolutionize the world. Uber's problems are in the immediate term, the idea that they will even exist when true self-driving cars actually make it to market is far-fetched already.

As we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – the ones we don't know we don't know. And if one looks throughout the history of our country and other free countries, it is the latter category that tend to be the difficult ones.