There are many, many cars to steal and/or buy in Los Santos in Grand Theft Auto 5. More than ever, most are based on existing cars from brands who wouldn’t ever dare give their license to Rockstar to use in the game.
One clever player decided to take a series of screenshots of various autos and turn them into fake car ads that might actually run in the game. They’re well done, and funny, fitting in well with the overall tone of the game.
There are a TON of these, and you can check all of them out in the gallery below: