I'm confused at the moment. Are the pictures on eBay right now, of his car or yours? I see a Title with his name which seems to match the tel # he posted, and the background of the car in the photos matches the general landscape of the address associated with the car. I don't see the signs of a scam here; although I am always skeptical. The scams like mentioned above usually direct you to contact the "hijacker" at a free email account, like gmail, yahoo, etc, not a tel # that is traceable to the name and general location shown on the Title.
Has he changed out the pictures of your car for ones of his? We had someone else post a similar thing where the seller was a bit lazy and used photos of an identical car. The seller wasn't trying to deceive, he just figured a White Viper is a white Viper for all you can see in a 500 x 375 pixel picture. I agree that it is the principle of the thing, though, and not right to mislead a buyer.