Go to create a car and put in for your first name as extra and your last name as drivers

After your EA Bio reaches level 44, you will start getting Platinum Thunder Plates. These include Unlock all Career Mode Create-A-Cars, Unlock all Create-A-Car Sponsors, Unlock all Create-A-Car Templates, Unlock all pro Paint Schemes, and at level 60 (Bio Complete) Unlock all tracks. Once you reach level 60, there should be nothing else to unlock. I have all the Thunder plates, paint schemes, tracks, cameo videos, Thunder licenses, Lightning Challenges, Speedzone Challenges, Season and Career modes, all completed, and at level 60 in my EA Bio.

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

Reach Level 16 to unlock the All-Star Race. Reach Level 18 to unlock the Bud Shootout.

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.

To unlock paint skins, set the game level on Veteran or Legend and then race on any 1 player race. This will not work on 2 player races.

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

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.