Once upon a time, a man named Elon Musk envisioned rockets in space, cars that were electric, and a vacuum tube that hurtled people from San Francisco to Los Angeles in 30-minutes. Many called him crazy, but Musk believed. Today, at the age of 43, he is a millionaire many times over and after the success of SpaceX and Tesla, even the Hyperloop doesn’t seem so out there. More complicated is Musk’s personal life. He’s suffered the death of a child, been married three times (twice to the same woman), and has five children.