I actually enjoyed this movie. It explores how best friends can turn on each other in times of undue stress: it makes you think "what if". Not only are they stranded with a vehicle malfunction, but they are in a hostile environment. The only stress outlet is to take their frustration out on each other. I didn't see the end coming, but with hindsight, I find that it was the most probable outcome for the situation, since the alternative was a far too heavily sugar-coated outcome. This picture was done well all around. I recommend a viewing.