Ron, Elon Musk is into something ...
If he can send a crew of the best life regenerators on Mars, they might be able to build a giant shield against the harsh elements and plant forests. Trees will give the energy of life and water and subsistence.
It might not be easy @ first, like he said that the first people taking his cab to Mars have a good chance to die. He said that only recently, like few days ago. But those first people taking the ride in his spacecraft taxi ride, we will never forget them for opening up the doors to expanded life beyond our own planet. We would be grateful to them forever for their human sacrifice. And by the way, the fare won't be cheap.
* I don't think Martians would show up before we do.