I guess "PROTOTYPE" has become a catch-all buzz word for everything that wasn't production in every detail. As a manufacturing process engineer, having taken products through all phases from inception, design, mold setup and modification, material selection trials, hand building mockups, pre-prototypes, prototypes, samples, preproduction samples, production ramp up and run to rate for production, I know the differences. I might take a production molded part and add a special cutom pain and hardware for a show vehicle, and it would be a one-off item, a sfo sample. The parts I made by hand from the first crude moldings, hand painted after clipping and sanding the gates and parting lines, drilled holes and hand fitted attachment hardware were prototypes that were sent to be fit-matched in Detroit to the prototype vehicle. This vehicle was usually scrapped at the end of the development cycle, the parts all sent to a chopper under escort lest they show up on the market somewhere. The second year's paint schemes and accent colors were sent out as customer approval samples, they were not protos.
Michael
PS- 000 was usually a number assigned to a photo sample.