Story you told is very close to this but the car which burned was a porsche 911 in this film...(with a close angle trick) :

http://www.youtube.com/watch?v=mIPWgMoudKI

http://www.imcdb.org/movie_111173-Shopping.html

Hallo everyone,

I'm new one here but I'm begining to be desperate... I've seen one movie, long time ago, about car thiefs. She and hers boyfriend are stealing nice cars but he dies, when they have stollen Ferrari Dino, in a persuit. She manages to get away. After finding out that he is dead she spills some gasoline on the car and sets him to fire. I've seen this movie in a tourist bus. I was very tired and I haven't seen all of it and this is all that I can remember... but the movie seems to be a little bit old one... sorry.

Is there anyone who can have a clue which movie is this?

Thanks in advance