Not listed in IMCDB
In IMDB http://us.imdb.com/title/tt0084329/

AKA:
Comédie érotique d'une nuit d'été (France)
La comedia sexual de una noche de verano (Spain)

1.- This nice red 2**


2.- This one also 2** (at right side)

Next 2 pics maybe can help something


3.- And background 1*. Only rear view (same car??)