Unlock the following by completing all Circuit Slaloms on each difficulty:
2000 SVT Cobra R - Beat New Orleans Slaloms on all Difficulties
Chicago Slaloms - Beat Long Beach Slalom on all Difficulties
Miami Slaloms - Beat Chicago Slaloms on all Difficulties
Mustang V-10 Concept - Beat San Francisco Slaloms on all Difficulties
New Orleans Slaloms - Beat Miami Slaloms on all Difficulties
New York City Slaloms - Beat New Orleans Slaloms on all Difficulties
San Francisco Slaloms - Beat New York Slaloms on all Difficulties

Unlock these Mustangs by passing the required amount of Style Points:
1965 Mustang GT Coupe - 10,000+ Style Points
1965 Mustang GT Fastback - 20,000+ Style Points
1968 Mustang 428 Cobra Jet - 40,000+ Style Points
1968 Mustang GT Fastback - 30,000+ Style Points
Cammer Fastback Concept - 60,000+ Style Points
Mustang II Concept - 50,000+ Style Points