The Goldberg family station wagon changes from a 1986 Mercury Grand Marquis Colony Park to a 1991 Ford LTD Country Squire when it's being towed away.
The first episode has the basketball backboard mounted on a metal post on the side of the driveway. All other episodes have the backboard mounted on the roof above the garage door.
Although it's incorrect for the Wawa to advertise beer...it's incorrect that state stores on Pennsylvania could only sell beer. In Pennsylvania beer was sold by private beer distributors - "State Stores" or stores owned by the Liquor Control Board of PA sold wine and spirits.