Flesheater

Flesheater is 1988 American horror film directed, written, produced, and co–edited by Bill Hinzman. Set on Halloween, the film follows a group of college students who encounter flesh-eating zombies while traveling on an overnight hayride through the countryside. An independent production, the film also stars Hinzman, best known for playing the cemetery ghoul in George A. Romero's Night of the Living Dead (1968).

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.