How bad is it? It's sometimes called the worst biker film (it isn't).
Should you see it? Yes, though it's slow and nasty, it's also goofy.
Before devoting himself to making terrible horror films, Al Adamson directed some terrible action films. This one has Russ Tamblyn, Scott Brady and Adamson's wife Regina Carrol (who's billed as "the freak-out girl" for good reason). This film is unusually sick for an Adamson film, with some nasty violent scenes. The bikers lace coffee with LSD, which leads to rape - and to showing Tamblyn's bad teeth in extreme close-up. A hitch-hiking Vietnam vet dispatches them in the end. This isn't Adamson's worst biker film; "Angels' Wild Women" is his female version of this film and I had to fast-forward through that dullness.