Perpetual motion - what a great concept! AND it's no use to terrorists!
It's a real shame that this thing will never get off the ground. What I find amusing is the contrast between this artist's rendition and a real zeppelin, in terms of the relative sizes of the buoyancy chamber(s) and the rest of the machine, even ignoring the fact that the zeppelin used H2, and this supposedly uses He.
If Christine O'Donnell learns about this it'll become a campaign plank.