Bite Marks (movie, 2011)

Truck-driver Brewster takes over his missing brother's delivery of a load of coffins to a funeral home. He picks up hitchhiking gay couple Cary and Vogel whose relationship is in trouble to help him stay awake but when his GPS leads them into a deserted junkyard, his truck breaks down, stranding them. Night falls, and the coffins reveal blood-thirty vampires. Now the mismatched trio must barricade themselves in the cab of the truck and try to survive until dawn...