With Tesla's Model 3 production behind, Elon Musk is so busy he doesn't even have time to go home and shower. And he's sleeping on the floor of the factory.

Tuesday, Musk talked to "CBS This Morning" host Gayle King about the stress he is under as Tesla works to get on track.

"I definitely feel stress, yeah. It's like — we've been incredibly difficult and painful the last several months," Musk said.

"Painful?" King asked, according to an excerpt of the CBS interview, which airs Thursday.

"Absolutely, of course. Yeah, I'm sleeping on the factory floor, not because I think that's a fun place to sleep. You know. Terrible," he said.