When Doug runs out of the restaurant, the exterior shot shows a sign of the restaurant's name as "The Grill" but during this episode the restaurant's name is "Slappy's."
George goes out of the back door to get money from his car. Within a few seconds, you hear his car start up and screech away. However, the backyard is outside that door and there's no available parking.
The waitress is credited as Joanne when her name tag says Mary.