I think the truck was chopped into that picture.. You can still see a border underneath the driver's wheel and along the driver's side.
There's a shadow coming from the booth in the upper left portion of the picture, but no shadows whatsoever from the truck.. Also, whenever they chopped the truck out of another picture, it wasn't quite lining up with the "floor" of that place, so they did some rotation with it, and now everything looks all 'skewed' I guess.
There's no way that picture was taken on that floor, with that truck sitting there. It's two different photos meshed into one.