At the Options screen, hold L1 + R1 and enter the following:
Triangle, X, Triangle, X
Square, Square, Square, Square
Much faster cars:
Triangle, Triangle, Triangle, Triangle
Triangle, Triangle, Square, Square
Square, Square, Square, Triangle. Use the horn to jump.
Circle, Circle, Circle, X
Triangle, Triangle, Circle, Square.
Circle, X, Circle, Triangle
Triangle, Circle, Triangle, Circle
Itchy and Scratchy Cartoon:
Collect every card in the game and go to Lisa'a level. In the Android's Dungeon, talk to the Comic Book Guy and buy a ticket for the cartoon. Then, go watch the cartoon at the Aztec Theater.
New Year's Theme:
Set the system date to January 1st.
Set the system date to October 31st.
Set the system date to December 25.
How to get the Hover bike:
How to get Mr.Burns Limo:
In level 7 go over and talk to Mr.smithers he is over at the Kwik-e-Mart complete the mission he gives you and you will get it.
In level 7 go and talk to the car seller there you can buy it for 1000 coins
Thanks to Revolution readers Butterman,MR-esc and Mark87!