Well, Maranello is the name of a type of Ferrari. I believe one of the towns is a reference also. Alitalia was it? An Italian friend of mine told me it translated to "little wings" and was a racing reference also, but since that was like 3 years ago I've forgotten how it was a reference. O_o
I did some research on it, and came up with something else.
Viper GTS'es Alphina is a reference to Alphina, a German manufacturer of BMWs.
Eh, while I'm at it, might as well list the known ones...
Carrera = Italian for "race", but also a reference to the Porsche Carrera 911
Mercedes = Mercedes Benz
Ratty = Maserati sports car