The car was fitted with many GM parts, part of the marketing was that you could take it to a GM dealer if it required any service. I believe it was a GM powerplant.

As for the stainless and waxing, that is the best part it is stainless you can use an SOS(steel wool) pad on the car to clean it and get it bright again like you do to your kitchen sink. Then you can apply any car polish as a sealer.

Most will recognize the car from the movies Back to the Future.

I heard somewhere that he had used the car to smuggle drugs and got caught.