Okay, here's a list of vehicles used in the 2000 Charles Busch farce Psycho Beach Party
http://www.imdb.com/title/tt0206226/
1)1959 Dodge Station Wagon.
2)Mid-1950's Oldsmobile(evidently the car where the first victim was killed.)
3)Unknown convertible(two of them actually)
4)1962 Plymouth Police Car
5)1959 or 1960 Cadillac Sedan De Ville Hardtop.
6)Possible Boyertown Hot Dog vending Van with Ford parts.
7)1961 Chevrolet Impala Convertible(maybe even an Impala SS).
8)1957-59 Ford Ranchero.
9)1955 Chevrolet Bel Air.


Sorry, not too many pics. However, I just found a side view of the Hot Dog Truck from an unorthodox source. WARNING: Not for the little kiddies!!
http://www.celebritymoviearchive.com/tour/movie.php/4655

This is all I can get for pics right now. Guess you'll have to wait until I can scan images from DVD's.