Richard Petty:

Successfully complete all Heat challenges with a bronze or higher rating.



Hardcore realism mode:

Get a 100 point rating on a track to unlock the hardcore realism mode option for that track.



Hint on the Pace car:

After coming out of the pits, press Brake. Reverse back into the pits and hit the pace car at about 100 mph. If you hit it hard enough, it will move. Steer it into any oncoming traffic.