Four Men in a Car (1998)

Four salesmen Alan, Ian, Steve and Tim are on their way to a conference where only one of them is guaranteed promotion. There is much bickering, Steve is perpetually sick and gets put in the boot, the C.D. player jams and they have a run-in with a Range Rover driver. When the car breaks down in a snowstorm they wind up in a deserted cottage with a shotgun-wielding, diabetic woman.