Hi Carlos,

I don't know the film, by why not search those Golf Cabriolets already listed:

http://imcdb.org/vehicles.php?resultsStyle=asImages&makeMatch=2&make=Volkswagen&modelMatch=- 1&model=Golf&modelInclModel=on&modelInclChassis=on&class3=3
http://imcdb.org/vehicles.php?resultsStyle=asImages&makeMatch=2&make=Volkswagen&modelMatch=- 1&model=Cabriolet&modelInclModel=on&modelInclChassis=on

The film might be among them.

Good luck,
Alexander