[jamornh]

I'm of the view that boring a tunnel is part of his bootstrap plan for bringing the same tech to Mars. It's likely that we will have to dig living spaces underground on Mars and bootstrapping better digging tech by finding a good use for it here on earth first is a great bootstrapping strategy.

[agumonkey]

Quite plausible indeed. Very much Musk to cross pollinate ideas (solar panel, chargers, tiles, batteries, cars)

[dechov]

Tesla's mission is a prerequisite for SpaceX's— it's difficult to establish modern civilization on Mars, but establishing fossil fuel-powered civilization there is a non-starter.