No offense, but that site seems a bit... out there. Mention of the idea that we must have captured at least one of those UFOs that have visited us reduces the believability.
There's also no mention of the actual technology/physics involved. Oh, there's plenty of talk about the idea, but no mention of *how* you manage to bend space. There's also not a single link that I can find in the article backing up their claim that NASA admits to working on an Alcubierre drive.
OK, I'll go back to my Anonymous Skeptics Society meeting now and leave y'all in peace.