<>Hey, now there's an idea. With these new color printers, just take a photo of the car in question, photoshop it into orthogonal shape, print it out on card stock at the right size, and glue it onto a block of wood! Glue on some ends from one of the detail manufacturers, screw on a coupla trucks, and you're ready to go! Keep the lights in the right place, and the shadows of the grabs and ladders will look JUST right!
Already been done. I remember (but being a senior I can't remember where or when) that someone took photos of a graffiti laden car and had decals made of the complete car sides. The decals were then applied to an undecorated car and the details added. Actually looked pretty good.