$90 billion is not a large sum of money, considering the pointless wars in Iraq, Afghanistan and Pakistan costed 3-4 TRILLION dollars. We could've had every major city connected to a maglev network by now if we didn't let politicians spend our tax money on bullshit.

Many space missions NASA designs are quite affordable, and the SpaceX innovations will make them even cheaper.

http://en.wikipedia.org/wiki/Financial_cost_of_the_Iraq_War#...