Five things you need to know about the new four-hour Elon Musk documentary

David Byrne has co-written Let Me Sell You a Dream for the film’s closing credits, which has lyrics consisting entirely of phrases spoken by Musk in the past. The title is appropriate, according to some of Gibney’s interviewees, who say that Musk tends to attract investment by promising that imagined future accomplishments – such as cities on Mars and completely safe self-driving cars – are imminent or already realised. “That’s not happening,” says Adam Becker, an author and astrophysicist, about Musk’s scheme to colonise Mars. “The gravity is too low, the radiation is too high, there’s no air, and the dirt is filled with poison.” Musk has consistently defended his visionary philosophy however: “I’m very good at predicting the future,” he told The Economist in a July interview. “I’m not perfect but I’m very good… people don’t realise that what I’m saying will come to pass – maybe not exactly in the timing that I thought, but it will come to pass.”