Need For Speed: ProStreet Easy money
When you get half way on a Raceday, you will be asked to select from three random prizes. Choose on any of them to see what you get. You will be asked if you want to keep dominating or leave the Raceday. Turn off the Nintendo DS, then turn it back on again. Continue your career. You will be asked to select a prize again. Repeat this as many times as desired.