While the old man comes to the door opening he's leaning on the door frames with one hand on his waist level and another hand high up over his head. But then when the camera changes view both arms are on body level all of a sudden.
When Cameron goes to the motel office the sign on the door reads "Open" in long shot and "Closed" in the subsequent close-up.
In the conversation with the Cop and motel keeper (Hank), Hank says that the couple are staying in room 26; but in an earlier shot they are staying in room 16
The Chinese restaurant visited shows an 8-digit telephone number for the business. Australian phone numbers were made up of 7-digits until 1995.