He's not only one of the world's wealthiest men, Elon Musk is also one of the smartest. There's no doubt he's an impressive high-tech visionary. As the boss of electric car maker Tesla, Musk's long-held dream has been to produce fully autonomous vehicles. For the last decade he has repeatedly declared Tesla's vaunted "autopilot" feature has been on the verge of solving the complex challenges of self-driving technology. But in a special edition of 60 Minutes, Musk is accused of exaggerating the capability of Tesla's achievements and lulling drivers into a false sense of security. This investigation, produced by The New York Times, reveals a serious gap between expectation and reality that's already led to several fatal crashes.