We have done it at work with a Chevy by using the VIN #, but the dealer knows who we are - we spend thousands there per year in service repairs. They just run the VIN and cut the key, but still has to be programmed at the dealer. I did it once myself with a personally owned Mercedes, but I had to show proof of ownership.
Thanks. Looks like it will be towed to the dealer, hopefully the keys will turn up, someone has them somewhere. I think someone was taking a look at it to buy and the key never made it back.