Elon Musk: “The important thing is that we build a self-sustaining city…”

“That's possible. All right. If man lands on Mars in 29, how soon after that do you land on Mars? Remains to be seen. I'm not sure. The important thing is that we build a self-sustaining city on Mars as quickly as possible. The key threshold is when that city can continue to grow, continue to prosper, even when the supply ships from Earth stop coming.” (01:48–01:57)

This is an excerpt from a raw transcript. The assertions have not been audited or verified. Tap the video to view the source footage and understand the context.