I would have to disagree. Spaceflight is a field in which the challenges that you're up against are fairly cut-throat, and you have to approach and defeat them in a cold, calculating manner. Unbridled enthusiasm alone will get you absolutely nowhere- your project will end up with a couple of cool CG images and a website, and then slowly vanish from the global consciousness.
Ah, I think we have a purely semantic disagreement here. What I meant was that the motivation s not primarily for the money or for political motives, which both would be a sure-fire way to get the project canceled at the first sign of trouble. A visionary can endure longer.
Also, I didn't mean "unbridled enthusiasm". That's why I think it's so important that their plans are within the realm of the possible and imaginable, although certainly bold, unlike Guys like Zubrin. That's not what I would call vision, it's outright fanatism.
Anyways, watched it, not that much new things after all those articles (of course an all-american motivational animation at the beginning, can't do without), but it's good to see the thing going official and the people responsible sitting together and saying, "yeah, we really want to do it!".