I've no idea on soundtrack for now. I got 2 songs that I like and they should be in.;
Sum 41 - Subject To Change
Linkin Park - In The End
As for the cars, here are some I missed out >.<
Dodge Challenger Concept
Enzo Ferrari
2006 Ferrari 599 GTB Fiorano
Maserati MC12
Aston Martin DBR9
Lamborghini Murcielago R-GT Concept Car
2008 Shelby Cobra GT500KR
2007 Nismo 350Z
2008 Infiniti G37 Coupe
2007 Callaway C16 Corvette Convertible
2003 Pagani Zonda C12 S Roadster
Alfa 8C Competizione
Carbon Walkthrough: Completed
Pro Street Walkthrough: 0.1 RC 2, 12% Complete.