25The Cars They Accidentally Left In
Found in the first four installments of Gran Turismo are some cars that you cannot get ahold of by legitimate means in-game. The mistake lies in the fact you can get them through hacking, even though the cars are fully modeled and come with their own title cards, stats,
and can be used in any track without crashing the game. These cars, which were supposed to be removed from the game due to cuts or licensing issues, such as the Lamborghini Diablo GT1, remain hidden in the game files.