Can you imagine the world's richest man living in a modest, foldable studio apartment? That's Elon Musk for you.

Elon Musk said the next phase of Tesla’s growth will be built around a global sustainable energy future, one that can serve a much larger world population and be achieved without great economic ...

He went on to explain, "So going beyond sustainable energy to ... Musk said he wouldn't feel "comfortable building a robot army" unless he had more control over Tesla's future. Musk has long teased ...