There is no cheat code on Gran Turismo 5 that automatically unlocks all licenses or grants the player infinite amounts of money. To unlock all of the licenses, the player must start at the beginning and earn each license individually.
Cheat codes are less commonly used in the Playstation 3-era of video games than they were with the 8-bit and 16-bit video games of the 1980s and 1990s. As of 2014, Gran Turismo 5 has sold over 10 million copies and is considered one of the best Playstation 3 games ever released. It features over 1,000 unique cars, 71 different tracks, realistic damage modeling and the ability to play online with up to 16 people. To beat every challenge, unlock every car and amass enough money to purchase every upgrade in the game for every car would require thousands of hours.