Newt and Marcie are driving through the desert and stop off at a gas station. They are told by Harry, the proprietor ( Warren Oates), that their car is in need of extensive repairs and suggest that, while he fixes it, they have a meal at his wife's cafe. Marcie finds him dodgy, suspecting the man of trying to rip them off. And, we as the audience, think the same, especially when the couple are presented with the bill for the repairs and the meal, which is quite dear. The couple declare it "nothin' short of highway robbery". Of course, the unexpected happens when the proprietor and his wife, who has the customer service skills of a buffalo, get the tables reversed on them.
This is an above average entry, mainly due to the performances, the arid and deserted scenery and the isolated gas station, but the twist is okay, though it isn't as effective on repeated viewings.