Looking for a movie Black comedy, crane and fat wife

My familiar looks for a movie. It's comedy film (perhaps black comedy) from 80's or 90's. Main character is a guy, which meets a new girl. He says that he is alone since many years, but his last woman was a slim ballerina. After wedding, a ballerina could not stop eat a lot of food. Then, she was very fat and main character had to transport her using a car with a crane. Once, during such a trip, he unfortunately stopped at a crossroad, blocked by a car in front. Then, there were a car accident - clash with a truck. He was completely powerless, he could do nothing. Being a witness tragic death of his wife was a traumatic experience for him. EDIT: I refresh my thread. I think that it's really good comedy film.