"It's not from the standpoint of actually trying to make any investment return," the 42-year-old serial entrepreneur explained. "It's really, I like to just keep an eye on what's going on with artificial intelligence. I think there is a potentially dangerous outcome there."
Musk referred to the plot thread in the "Terminator" movies, where (SPOILER ALERT!) increasingly intelligent and malevolent robots take over the world. "They didn't expect some sort of 'Terminator'-like outcome," he said. "It is sort of like the 'Monty Python' thing: 'Nobody expects the Spanish Inquisition.'"
He also said he's leaving the field open for others to follow up on his proposal for a high-speed tube network called the Hyperloop, at least for now.
"I understand that there are some companies that are forming to try to make the Hyperloop happen," he said. "I encourage them. I think that's great. I'm super-focused on Tesla and SpaceX and a small amount on SolarCity. So that basically completely uses up my brain. But I hope something happens with the Hyperloop. And if nothing happens with it, then I will probably do something down the road to try to make it happen."