Rob and Roger are working on a 1965 Ford Mustang in Rob's garage.
For the first time in the series, the Petries pour their milk from a store bought carton instead of glass jugs brought by a milkman.
While Laura is talking to Roger in the kitchen, she makes a joke about it being "A quarter to three, there's no one in the place except you and me". A decade later Mary Richards would sing this same song to Lou Grant in the Mary Tyler Moore show.
This is the first time the series features a scene in Rob's garage.