I love this film. It's a perfect blend of three genres - the Car Movie (such as Vanishing Point, Dirty Mary Crazy Larry), the Hillbilly Horror movie (Rituals, Deliverance) and the Satanic Cult movie (Rosemary's Baby, Horror Hotel).
The whole thing is so breezy and fun that you hardly notice how fast the reels spin out towards the memorable ending and the chemistry between Fonda and Oates is great to watch (in an interview on the DVD, Fonda claims he and Oates were already best friends since starring in the 1971 western "The Hired Hand").
The satanic stuff is more funny than scary but you really feel the tension as their little vacation goes to hell and all sorts of creepy events unfold. The car stunts are top notch and are unique in that they involve a speeding Winnebago versus pick-up trucks instead of the usual Dodge Chargers and Mustangs.
Just a great little movie to waste a Saturday afternoon with.
