Cheat mode:
Hold L + R + X + Y + click-hold Left Analog-stick + click-hold Right Analog-stick on controllers one and four simultaneously at the character selection screen. A voice will confirm correct code entry. All drivers, courses, and taxis will be unlocked.

Expert mode:
Highlight a driver, then hold White + Black and press A at the character selection screen. The message "Expert Mode" will appear to confirm correct code entry. No destination or arrow indicators will appear in this mode.

Disable arrow indicators:
Highlight a driver, then hold White and press A at the character selection screen. The message "No Arrows" will appear to confirm correct code entry.

Disable destination indicator:
Highlight a driver, then hold Black and press A at the character selection screen. The message "No Destination Markers" will appear to confirm correct code entry.

Bonus courses:
Successfully complete Crazy X level 1 to unlock the West Coast, Glitter Oasis, and Small Apple courses.

Bonus taxis:
Successfully complete Crazy X level 2 to unlock the bike, stroller, and carriage taxis.

Another Day mode:
Successfully complete Crazy X level 3..

All drivers:
Successfully complete Crazy X level S-S.

Toggle headlights:
Click the Right Analog-stick to turn your headlights on and off.