Elon Musk also put on Jensen Huang's favorite black leather jacket today and rang the Nasdaq opening bell—SpaceX $SPCX is officially trading! You can tell they're genuinely happy. I mean, they’re all billionaires now, right? In this moment, even Musk feels like it’s a dream. Back when he was sleeping on the warehouse floor, he never imagined that something with only a 10% chance of success would actually make it!