Before Travis Kalanick became famous as the public face of Uber, he was a scrappy, rough-edged, loose-lipped entrepreneur. And even after taking Uber from the germ of an idea to a $69 billion global transportation behemoth, he still describes his company as a start-up. Like other Silicon Valley icons such as Steve Jobs and Elon Musk, he’s always focused on the next disruptive innovation and the next world to conquer.