While his plan does included landing on Mars, that's not the final goal. Nor is simply getting human life there either. He wants sustainable life on Mars, allowing it to become another planet for our civilization. He's even joked (sort of), "I want to die on Mars... just not on impact."
As if top-rated electric sports cars, space exploration and electronic payment methods weren't enough, the Revolutionist has his hands in two other places -- at least, that we know about: Solar and the Hyperloop.
We'll get to the Hyperloop in a minute and to be fair, his cousin is actually the CEO of SolarCity (SCTY - Get Report), not him. But Musk was part of the brains behind the original plan at SolarCity, which is the largest provider of solar system units in the United States. He is also a chairman for the company and the largest shareholder with a 28% stake.
As we all know, solar has become an alternative -- and perhaps more importantly, clean -- method for obtaining electricity. While solar might not power the entire home yet, powering some of it -- such as the refrigerator or thermostat -- is both efficient and clean.As solar gets cheaper for both commercial and residential use, it will become more populous, and thus, the world -- or at least the United States -- will begin to consume cleaner and more efficient energy. After all, one of the main reasons Musk pushed SolarCity and Tesla was to reduce the global greenhouse footprint we've stamped into our atmosphere over the past several centuries. Now for the Hyperloop. While there hasn't been a lot of confirmed chatter about the specifics of the Hyperloop yet, we'll find out more today when Musk is set to reveal his plans. He sums it up best by saying, "What you want is something that never crashes, that's at least twice as fast as a plane, that's solar powered and that leaves right when you arrive, so there is no waiting for a specific departure time." In fact, the Hyperloop could likely generate more power than it needs, allowing it to save the excess energy, which of course, Musk already has a way to do. I'm sure plenty more details will be released but suffice to say this hypothetical mode of transportation could become the fifth alternative, joining planes, trains, boats and automobiles.