Unlock the following Race Specials cars by performing the corresponding tasks:

CAR - HOW TO UNLOCK
Euro Classic LM - Get 140,000 Maniac Points in the “Maniac on Black Gold Highway” event (10th event in World Tour Race Specials Series).
GT Racer - Get the Get a Gold Medal in the “Dominator Challenge on Glacier Falls” event (13th event in World Tour Race Specials Series).
Oval Racer - Drift over 9,000 feet in the “Maniac on Ocean Drive” event (2nd event in World Tour Race Specials Series).
US Circuit Racer - Take down the US Circuit Racer three times in the “Race on Steeltown Works” event (5th event in World Tour Race Specials Series).
World Circuit Racer - Perform a 3X Burnout in the “Burnout Challenge on Spiritual Towers” event (6th event in World Tour Race Specials Series).