Not so fast, Elon Musk! Get back in line with the rest of the losers. Mars ain't gonna happen - and you won't need your tourist shots now. https://www.space.com/41381-mars-colonization-elon-musk-bad-idea.html ..... sumpthin' about not stepping on the Martians who now are purported to live under the top layer of Mars dirt and snow. Walking on the locals could spoil an intergalactical kegger here!