As the milk truck driver leaves his truck, the left door starts to swing shut. As he walks away, the left door is still and open all the way. When Ethan runs to the truck you can see it swing close.As Ethan climbs in and when the driver comes back it is open again.
Early in the episode Ethan sees a truck with Wyoming tags. The county code(the number before the bronco) on the tags is 32. Wyoming only has 23 counties.