Successfully complete U.S. Champs mode to unlock the Team Spirit and World Champs options at the main menu.
Game Shark Codes
Master Code (Must Be On) EC8E61F0 14426784
Infinite Lives 4CA8659C 1456E788
Unlock All Story Mode Levels 4CAB3E64 1456B00C
Unlock Arcade Modes 3CAB3E98 1456E70C
Unlock All Racers 4CAB4134 1456B00C
Always in the Zone 1CA865FC 1456E7DD
Press R2 to be on Lap 3 DC937E23 14253EE71CA86738 1456E7A71CA86768 1456E7A7
Press L2 to be on Lap 6 DC938123 14253EE71CA86738 1456E7A21CA86768 1456E7A2
Always Low Time 1CA8693C 1456E7A51CA86968 1456E7A51CA5398C 1456E7A51CA86994 1456E7A51CA5377C 1456E7A51CA53DAC 1456E7A5