An abuser and his overly tolerant wife get stuck together in a storm. If that doesn't trigger you (and for many, it might), feel free to watch it.
The best thing for the character of the husband would have been for him to die a painful death in the first 5 minutes of the movie. He is the epitome of the slow-witted abuser, and if you've ever met anyone like him, the movie becomes very difficult to watch. If you've ever even dated someone like that, the movie might send you into some pretty severe PTSD.
I started out feeling sorry for the wife, but then realized she was irritatingly dumb as a box of rocks, so really, if both of them had ended up smears on the road it would have been a gift to the genetic future of the human race.
It's very hard-to-watch a film wherein both characters are this infuriating. However, it is actually quite well made. The acting is marvelous (unless both of those people really are that moronic and emotionally crippled). The writing is good, the cinematography is professional, and the editing is smart. The progression of events is good. Unfortunately, my prime response was to want to reach through the screen and tie them both up and drag them to therapy.
The ending is satisfying on one level, but on others it felt a little bit like the punch-line to a joke. It is where the acting gets truly superb, however.
As annoying as these people are, I'd say it was worth it to get to the end.