Nascar 50th Anniversary SE (PSX)

Shoot paintballs:
Pause the game and display the race statistics screen. Then, hold L1 + R1 + L2 + R2. If you entered the code correctly, you will hear the sound of an engine. Now resume the game and press Triangle to shoot paintballs at other cars.

Pinnacle Trading Cards car:
Go to the car selection screen in exhibition mode and highlight Bobby Labonte's car. Then, hold X and press Up, Down.

EA Sports car:
Go to the car selection screen in exhibition mode and highlight Kenny Wallace's car. Then, hold X and press Up, Down.

Increase frame rate:
At the options screen, hold Circle and press Up, Left, Down, Right. If you entered the code correctly, a new option that increases the game's frame rate will appear at the bottom of the screen.

Waving driver:
While driving, select the view in which the driver and steering wheel are visible. Then, hold Triangle until the driver waves.