I love the idea of the hyperloop, but I gotta go with some of the other folks on this forum regarding keeping Government (Federal or State) out of it. Government can't do this effectively, it would cost 10x as much and take 10x as long. And that would be if it was already existing technology (In CA you can just look to the bridge upgrades and BART extension as examples).
I think the only way this can happen is with private funds and private oversight. (Maybe Elon with Branson as someone else on TMC suggested, or Elon and ET3?) Keep in mind, there isn't even a working prototype, and Elon himself said it would take1-2 years to get working prototype, 7 years to implementation if he did it, and I really only trust him to do something so radical. But as such at Tesla fan, I DON'T want him taking on another project!
I do however believe we should keep the political process open, so even though I won't sign, I did forwarded to someone outside TMC that might be interested in signing. One of the nice thing about TMC and (at least theoretically, if not practically) in US is that we have free speech, and the right to free political participation to all members (citizens).