The idea of "wrecking" passing travelers, using fake lights, was used in the Australian film "The Cars that Ate Paris". The town survives by wrecking cars and salvaging everything including the human occupants. The title was changed in America to - "The Cars That Ate the World" It's an early Peter Weir film. Great fun and weird! Has a sequence showing an Aussie Bush Dance that's blacker than black in it's humour. Joy