Deliberate Flaw Retcon: This article argues that the film is actually a work of genius, the "flaws" being deliberately worked in to subvert the tropes of the B-Movie horror genre.
Hey, It's That Guy!: The Jeep driver who crashes said Jeep into a tree under the influence of the neurotoxins and is launched through the windshield is Brian O'Halloran, who also played Dante Hicks in Clerks. (Poor guy. He wasn't even supposed to be there that day).