And he’s aiming for a second mission to transport humans to Mars by 2024.

Engineer and aerospace consultant Jim Cantrell said in 2018 of Musk’s Mars dreams: “Elon really doesn’t care about the money — he wants to go to Mars.

“It was always focused on Mars, none of this was focused on the market.

“I was the guy who had the market focus, and I was like, ‘Hey, look Elon, we’ve got to have a return on investment.’

“His response to me was, ‘I don’t really give a damn about return on investment.’”