This film (which looks earlier than 1968 to me, but I didn't catch the copyright) is an industrial promotion film for Phillips 66 Petroleum, if memory serves (I saw it several years ago). Rowan and Martin are running a service station and "comedy hijinks ensue." Basically the film is a series of examples of new methods and products designed to help station owners and franchisees decide to get the "new, improved" versions of things. Rowan and Martin are the comedic "negative examples" of what not to do. Martin especially gives an energetic performance, and some of the bits are amusing. But this was designed as in-house PR and not as a film where the comedy was the top priority. Yes, the director is the same Herk Harvey who directed the original low-budget Twilight Zone-like cult favorite "Carnival of Souls." A competent curiosity.
EDIT: I see the date has been changed from 1968 to 1960, and the director has been changed from Herk Harvey to his business partner---so surely Harvey was the producer, at least. As I said in my review, I was basing this on a long-ago one-time viewing, so I am sure these changes are accurate.