NASCAR: Dirt to Daytona Unlockables

By winning every challenge you can unlock Richard Petty.

The bonuses below can be unlocked while playing the game by doing well and earning points.

AI Vengeance: AI cars retaliate when hit.
Front Wheel Drive: Car has front wheel drive.
Hardcore Physics: Hardcore realism.
Horn Ball: Push Up to shoot a paintball.
Horn Mortar: Push Up to shoot an explosive mortar.
Insane Racecar: Push Up to jump.
Mini Cars: Smaller cars
Monster Cars: High suspension.
Oh Dear: One car on track replaced by monstrous-sized crew member.
Super Draft: Faster draft speed.