I'm surprised there is no category for "The Adams Family" 1992?. There are 2 unusual cars. The one the Adams family drives (some 30's car - unknown) in a few scenes. The other one is a Messerscmitt (`55-`64) drove by Cousin It - 2 scenes. You may want to check these out to be sure.

Two "d" in Addams
http://www.imcdb.org/movie_101272-The-Addams-Family.html