Today’s SpaceX launch was spectacular, making the Falcon Heavy the most powerful rocket in the world and wowing us with the synchronized landings of the side boosters. Yadda yadda, historic space stuff. But the payload was Musk’s own Tesla roadster with a spacesuit-wearing dummy in the driver’s seat. So we wondered, if we were somehow able to bring the car back from space, would it still work? The answer is that it’s complicated. But probably not.