Detour(2003)

One wrong turn and you're fresh meat!

Driving home from a deep desert rave, seven teenage friends travel off the beaten path only to be trapped in a reality far more horrible and frightening than any nightmare they could possibly imagine... Flesh eating cannibals roam this stretch of tortured land, feeding off anyone who is foolish enough to stray into their deadly territory. Now the friends must become as savage as their attackers if they are to escape the desert alive...