I remember watching this movie circa 1985-1988 when I was a little boy and don't really remember much about it. The movie involved the plot with a killer. Some parts of the movie were shot at night and there was a rather small breasted woman getting naked near the end (and possibly getting killed too). One more thing I remembered from the movie is there was a grey / black car with a louver. It could be a Porsche, 1950's or 1960's model. I'm not really sure, but I had an impression that the movie looked somewhat like movies classified as italian gialli.

according to your italian giallo movie guess:

http://www.imcdb.org/movie_67384-La-corta-notte-delle-bambole-di-vetro.html