Last week, Tesla's AI Day blew expectations out of the water.After the presentation, commentators noted that Elon Musk's various companies appeared to be converging into a vertically integrated mega-corporation for colonizing Mars.However, most people overlooked the important role that Dogecoin could play in such an enterprise.Is Doge for Mars inevitable?Let's take a look at Elon's master plan for Mars and Dogecoin.