For those who guessed this was a replica -- or, possibly, an original -- Mysterion by Ed Roth, you are correct. I was contacted by Nathan at JMPR, who will be putting me in touch with an expert on Ed Roth vehicles sometime this weekend, so I can learn more about it. This has been parked in the lot at the hotel in which I'm staying, and I've passed it a bunch of times. There are always gawkers, but no one (yet) who can tell me what, exactly, it is.
From the looks of it, it's a single-seat, ultramodded hot rod ... thing, with a touch of Adam West's Batmobile and a curb weight of no more than several hundred pounds. Other than that, I'm stumped.
Anyone have any ideas??