Infinite money:To get infinite money you will need a private lobby on Xbox live with a friend and perform the following steps:1. Buy the 1969 Chevrolet Camaro Z28.2. Buy all engines for that Camaro.3. Buy all parts for each engine, including all aspiration parts.4. Exit to the main menu to save the engines and parts that were purchased.5. Enter the engine purchase menu, and sell each engine, but do not leave the engine menu.6. Press the Xbox Guide button, and join your friend