https://techcrunch.com/2017/10/15/elon-musk-banters-and-answers-rocketry-questions-on-reddit/

Elon Musk did an AMA on Reddit yesterday, and while he didn’t provide every missing detail on SpaceX’s ambitious BFR program, he was (as always) engaging and informative in a more general way. Here are the highlights of the Q&A.

Musk’s talk at IAC a few weeks ago raised a lot of eyebrows — the rumored BFR, or “Big Fucking Rocket,” was documented at least in concept, as was a plan for colonizing Mars. But while the rosy hued predictions of a massive city resupplied by countless rockets was compelling, there’s a lot that has to happen first.