Grand Theft Auto IV
Tank cars are found around the map's abandoned rail lines, rusted out and useless.
Grand Theft Auto V
Tank cars come in three colors: Black, white, and orange-red. (However, only the orange-red ones are actually hauled by trains.) A rusted, wrecked version can also be found. Like other movable train cars, this one will not explode if shot at, or if the player sets off explosives near it.