Unlock Fantasy Drivers:
At the Create-A-Car screen use the first name "Extra" and last name "Drivers" to unlock Fantasy Drivers.
Unlock Dale Earnhardt:
At the Create-A-Car screen use the first name "Dale" and last name "Earnhardt" to unlock Dale Earnhardt.
Unlock Night Tracks:
Win a race on Veteran or Legend on a track with an available night track version.
Unlock the Tiburon Track:
You must have a saved game of another 2003 EA game.
Unlock Paint Schemes:
Win a race under Veteran or Legend mode to unlock your driver's paint scheme.
Unlock 31st Lightning Challenge:
You must win 8 Championships in Career Mode.
