More impressive is the fact that this thing could be unfolded and deployed in about a minute — holy crap — and could carry a payload of around 500 lbs.
The box itself was10'4" x 1'9" x 3'0", and the crew of four guys that could ride in it are said to be enough to carry it around. Also, it was designed by someone named "J. Dolphin," which is a pretty fantastic name, too.
If anyone knows if any of these survived, I'd love to find out who has it and beg them for video of it an action.