I don't know, I guess it depends on the materials used. PVC would be fairly cheap and would make a great waterproof and lightweight shell. I want to try this and make a '49 Mercury lead sled, a '32 Ford "Woody Wagon", or a '29 Ford Pickup with wood bed. They even got wood colored duct tape! http://www.fortisdesign.com/shop/wood-g ... duct-tape/