Defeat one of the following opponents to unlock the corresponding car:

Carrera 4S: Ming
Carrera GT: Toru Sato
Corvette: Kamikaze
Eclipse: Big Lou
Ford GT: JV
Gallardo: Webster
Lancer and WRX STi: Earl
M3 GTR 1: Ronnie
M3 GTR 2: Razor
Mustang GT: Baron
RX-8: Izzy
TT: Jewels