checked-no =>Extra Racers: For Dewey, earn first place in all three of the amateur circuits. For Louie, get first place in the circuits in normal mode. * Huey: Hook up the Transfer Pak and the Mickey's Speedway USA Game Boy cartridge. Turn on the N64 with the Game Boy game in place and you will earn Huey as a playable character. =>Victory Vehicles: To enable the Victory Vehicles circuit, you need to earn first place in all three basic circuits at the Professional difficulty setting. =>Rocket Start: Press A when the third red light lights up. =>Frantic Finale: There are four missing car parts hidden throughout the various tracks in the game. Once you find all four (regardless of whether you beat the race the part was found in), Frantic Finale becomes available as a course.