Not only were all those start-ups of his extremely difficult technically wise, and also difficult to succeed in those markets, but he was basically running them in the same time! That's incredible. And he's just 40, and I think there's a lot more we'll see from him. His wife said at the end that he's also thinking about making electric jets, fusion reactors, and colonizing the Moon and Mars. After what he's done so far, I wouldn't bet against him.