I had a couple ideas, none that necessarily go together but maybe there's something you could use. Use that photo you posted above and take it to a sign shop. Have them scan and apply to a piece of plexiglass and make a lightbox out of it. A free standing lightbox. Either make the box out of wood or cardboard and light it by mounting battery powered fluorescents (the kind you mount under your cabinets). Utilize the box for pontiac insignia/graphics. An added effect, if someone can photoshop that photo to be black and white, except for the car it will really POP.

You could also get a canvas tarp and paint It like a dried riverbed or saltflat and cut the edges jagged around the cracks. Or just paint It like a road w/yellow lines.

Also, you can use things like sonet tubes as stantions, just paint them and add a top.

Another flooring idea is that you buy a couple boxes of vinyl tile (12" sq.) In marble or granite or river rock or even parquet flooring and assemble them under the car.