Continuity mistake: After Claudia leaves the ride without her cell phone it cuts to Fin driving his car into dense fog, and in the exterior shots the Toyota's front grille emblem as well as the license plate inexplicably vanish, and then reappear.
Continuity mistake: When the gang meets the zombie that likes Britney Spears, he's got his left arm outstretched trying to grab them. In the next shot, his arm is lowered.
Continuity mistake: Nicholas Cage sees his ghostly son through the window of a bus, and so he rushes after him. Right at the first left turn, the natural light couldn't be any more different in the two separate shots. (00:32:30)