Alternate colors
Press Down, Square, Down, R1, Right(2), Up, Left, Circle(2), L2, L1 at the main menu, then begin game play.
Motion blur effect
Press Up, Left, Circle, Down, Right, Square, Up, Down, Left, Right, Circle, Square. A "Blur" setting will appear on the options screen.
The Geeze car
Collect all coins in Rome level 1.
P-nut car (Mini Cooper)
Collect all coins in Rome level 2.
Froggy car
Collect all coins in Rome level 3.
Super Genius car (Smart Car)
Collect all coins in London level 1.
Turtle car (VW Beetle Convertible)
Collect all coins in London level 2.
Ricochet car (Audi TT)
Collect all coins in London level 3.
Fang car (Mazda MR2 Spyder)
Collect all coins in London level 4.
Road Shark car (Honda S2000)
Collect all coins in London level 5.
Portabello car (Lotus Elise)
Collect all coins in Tokyo level 1.
Street Eagle car (Porsche 911)
Collect all coins in Tokyo level 2.
Black Widow car (Plymouth Prowler)
Collect all coins in Tokyo level 3.