Sharon Farrell and Roger Perry had one other collaboration 12 months earlier in the 'Onward and Upward' episode of the 'Arrest and Trial' TV series.
If the calendar on the wall is any indication, this was filmed in December, 1964.
Cliff's car, a 1959 Edsel, was from the second of only 3 model years in which the make was produced. The car had become something of a laughing stock by the time this episode was aired in 1965, but despite that, and the fact that the car was in the process of breaking down, Rosie was still impressed with the fact that it had air conditioning.