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From the liner notes

The Devil’s Advocates - an outlaw gang of Harley-riding hellions led by Adam (Stephen Oliver of Motor Psycho and Peyton Place fame) and his ol’ lady Helen (D.J. Anderson) - troll the dusty highways of the American Southwest in search of the next great kick, whether it be sex, drugs, or violence. After dispatching a pair of rednecks unfriendly to their lifestyle, the Advocates run roughshod over a gas station before taking to the road again, where they encounter a cloistered sect of Satanic monks led by high priest One (Severn Darden). A mass-drugging, a ritual sacrifice, a topless snake-dance, and a scene-clearing fistfight ensue but it’s too late: the spell has been cast, and two shall become… Werewolves on Wheels!

Equal parts road movie biker pic and black magic monster flick, this cross-genre film marked the directorial debut of Michel Levesque, art designer on the Russ Myers films Beneath the Valley of the Ultra-vixens and Up!. Also starring Billy Gray (TV's "Father Knows Best") and pop singer Barry McGuire, Werewolves on Wheels defies classification. Is it art? Is it exploitation? The answer is a resounding yes.