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Sully's Auto Mart is a car shop in Grand Theft Auto IV. A commercial can be seen sponsoring it on television. The shop is not actually shown in the current version of the game but the area in a TV commercial was filmed at Willis Wash and Lube in Willis, Dukes, in an early version of GTA IV. The shop sold cars in very bad condition, some with bullet holes, while others have broken lamps. It is possible that they are stolen since one car has blood on the broken windshield.

The following cars appeared to be sold by Sully's, according to the commercial (some of them had their beta apperance): Emperor, Chavos, Blista Compact, Sabre, Hakumai, Feroci, Contender, Marbelle, Bobcat, Buccaneer, Esperanto, Vigero and Dukes.

It could be a possible reference to Sully from The Warriors, another Rockstar game. Sully in the game is the leader of the Orphans gang. He drives a car identical to the last car shown in the TV advert.