Go to the options screen and change the name of the driver and the racing team to one of the following for the desired effect:

Driver: avenger Team: zx Avenger Mode.
Driver: deamon Team: Grem Bouncing Cars.
Driver: r peterson Team: Swe Get all cars and tracks.
Driver: lemmy Team: ace Hell Mode.
Driver: ignition Team: UDS Ignition Mode.
Driver: g-ride Team: west L.A type suspension
Driver: buzz aldrin Team: NASA Low Gravity.
Driver: supercars Team: Grem Overhead View
Driver: tribute to tron Team: none TRON mode.
Driver: ramlosa Team: h20 Water Mode.