Unlockable: All Cameos

Select the Features option on the main menu, then Create-a-Car. Enter the name Seymore Cameos as printed.

Unlockable: All Create-a-Car Sponsors
To unlock all create-a-car sponsors, win the Winston Cup in Career Mode and you'll get a thunder plate that states all create-a-car sponsors are unlocked.

Unlockable: All Dale Earnhardt Cars
Beat every rookie lightning challenge to get all the Dale Earnhardt cars.

Unlockable: All Fantasy Drivers
Go to create a car and put in for your first name as extra and your last name as drivers

Unlockable: Dale Earnhardt Bonus
Win the Daytona 500 in season mode driving Kevin Harvick's #29 car to unlock Dale Earnhardt. You will also get the Goodwrench car, Goodwrench Plus car, Wrangler car, Silver car, Coke car, Bass Pro Shops car, Oreo car, and the Legacy car.

Unlockable: EA Bio Extras
Reach Level 16 to unlock the All-Star Race. Reach Level 18 to unlock the Bud Shootout.

Unlockable: Fantasy Drivers
To unlock the fantasy drivers, just win three championships in career mode.

Unlockable: Kitt Paint
To unlock Kitt Paint, win the Winston Cup in Career Mode.

Unlockable: Normal Driver Special Paint Schemes
Win 5 Championships and you'll get all special and retro Winston Cup paint schemes.

Unlockable: Paint Schemes for Other Drivers
Win a race in Veteran Difficulty to unlock a different paint scheme for your driver.

Unlockable: The Perfect Car
Reach level 28 in your EA Sports Bio and you will unlock the pace car, Buster Auton. The pace car will not receive any damage when it is hit.

Hint: EA Sports Bio Bonuses
If you only have Nascar Thunder 2004: