I'm a sucker for those doomed road trip horror movies. A gang of friends, a pair of siblings, a couple on the brink of the next, or last, step in their relationship, loading up the van and seeing where the open road takes them, only to find themselves well and truly screwed when they run into something or someone they are not equipped to handle. It's such a great little setup that immediately taps into a sense of vulnerability. The characters are out of their element, visiting new places, and enjoying none of the control or autonomy that comes with being in their own house, in their own town, among people they know and trust.