Press L1 + R2 at the neighborhood selection screen.
Bonus music
Press R1, Triangle, R1, L1, Circle, X, R2, L2, Square during game play to hear three additional songs. Press R1, Triangle, R1, L1, Circle, X, R2, L2, Right during game play for a fourth song. Note: The music will return to normal after the current level is completed.
Flip off other traffic
Press L1 + L2 or R1 + R2 during game play to flip the finger at other traffic.
Free Mode
Enter the password HANOILBKJO to play in free mode.
Give Someone the Fist
To give someone a fist, preferably a person in a car, press R1 and R2 together to do it on your right side or L1 and L2 to do it on your left side. If it is done correctly, you will hear the driver say something like "Arrest that punk!"
No Friction
To make your tires and the ground have no friction between them you must stop the bike and tap CIRCLE repeatedly but do not hold it down. If you did it right he will pedal but he won't move!!