Plot hole: Mater tells McQueen he moved and looked like he just saw the Ghostlight. Sheriff gets on to Mater for talking about the Ghostlight and then their whole plan falls into place to trick and scare Mater with the blue lantern. Only there's no way they would have known that Mater would have mentioned the Ghostlight after that. McQueen didn't know about it, supposedly. And he had been scared by Mater and had been there enough that he would have known if Mater had mentioned it before, and Mater would have known he told McQueen. (00:01:55)
Continuity mistake: When Cruise and Lugnut are driving home on the road, there are road markings shown on the road that are about a foot long, with quite a thick paint job, but when Cruise starts to speed away from Lugnut later in the scene, the road markings are suddenly much longer, with a much thinner paint job. (00:04:00 - 00:05:35)
Continuity mistake: Hargon has a hook for a left hand. After the opening credits (during the dice roll scene) the hook is briefly on his right arm. Then it's left again during the rest of the episode.