If it weren't at the taxpayer's expense, and his mars colony idea was actually funded out of his own companies, it would be hilarious to watch. I'd love to see them prioritise building a statue of Musk before they set up a proper air filtration system or farm. The astronauts would be subjected to interacting with Elon's fans on twitter (who paid for the experience) and answer their questions while being obviously uncomfortable. It would be a hilarious disaster.