Psychomania
Psychomania (U.S. title: The Death Wheelers) is a 1973 British outlaw biker supernatural horror film directed by Don Sharp, and starring Nicky Henson, Beryl Reid, George Sanders (in his final film), and Robert Hardy.
Source: Wikipedia, Psychomania. Text licensed CC BY-SA 4.0. Not endorsed by or affiliated with Wikipedia or the Wikimedia Foundation.