This is another great episode of a great show. The writing,the timing and direction are first-class. All of the actors do a fine job and they work together pretty-much perfectly. I enjoy this whole charming series! 70 episodes were made over the course of 2 seasons. Surely this show could have lasted several more years,but they quit on a high note ! Far too many good tv shows in general were (and still are) run into the ground and it is a shame. Of course this is much easier to spot after the fact than during the time it is going on. Just think to yourself how many different shows over the years started out good and simply stayed on tv way past the time they should have. That is a fairly large number. Then,think of some new-at-the-time shows you've watched over the years that had promise and potential that quickly disappeared without explanation. That is surely a smaller number. (Not the crummy ones that were cancelled,there were surely hundreds of those)
It is not hard to think of several reasons and scenarios that may have allowed for some of these other shows to drag-on past their expiration date.
These guys got it 'just right' with the Car 54 tv series !