Musk is cooking up plans for something he calls the Hyperloop. He won’t share specifics but says it’s some sort of tube capable of taking someone from downtown San Francisco to Los Angeles in 30 minutes. He calls it a “fifth mode of transportation”—the previous four being train, plane, automobile, and boat. “What you want is something that never crashes, that’s at least twice as fast as a plane, that’s solar powered and that leaves right when you arrive, so there is no waiting for a specific departure time,” Musk says. His friends claim he’s had a Hyperloop technological breakthrough over the summer. “I’d like to talk to the governor and president about it,” Musk continues. “Because the $60 billion bullet train they’re proposing in California would be the slowest bullet train in the world at the highest cost per mile.