RFI: French film that plays out its final minutes as a Taxi Driver farce

I only caught the last few minutes of this film on Film FOur, about four years ago now. I may have made up the protagonist going into a house and shooting it to bits, but I certainly recall him driving a way a girl, a mere child who was determined to mate with him somehow. Having dwelt on the matter long enough to put the question I'm minded to think there was a pig in the car, but I may be conflating memories.