Access the "Vehicle Unlock" screen from the Options menu and enter the following codes to unlock the corresponding vehicles.

Password	Effect
APMXG	Alfia Aquila
EKQAEE	Rudbaker V8 Deville
HLZKPT	Spirit Duetto
JJOCMT	LEM
KUUOSD	Grumann F12-I Makko
LZAXPF	Roswell Flying Saucer
OVRCSQ	Daisy
RXCVQI	Sharkooov
SRZPBZ	Julietta '52
VMAOPJ	Yakovlev Requiem