Enter "Extra" as a first name and "Drivers" as a last name under the "Create-A-Car" option.

Race as Dale Earnhardt
Enter "Dale" as a first name and "Earnhardt" as a last name under the "Create-A-Car" option.

Tiburon Speedway track
Use a memory card with a saved file from an EA Sports 2003 game.

Thunder Plates
Select the Thunder Challenge or Lightning Challenge at the game mode screen. Complete the various challenges to get new Thunder Plates. Note: The Plates are awarded randomly from game to game -- winning a certain track with a particular driver will not unlock the same Plate between games