Despite feeling that flying by witchcraft is much more efficient, Samantha is nervously excited by Darrin's want for her to learn how to drive, with Darrin himself being her instructor. When that instructor/student relationship threatens their marriage, they decide to let a professional teach Samantha instead. Who the driving school assigns to be Samantha's teacher is Harold Harold, the driving school owner's brother-in-law. Harold is a nervous man, who moves from job to job, all provided by various brothers-in-law who employ him only because of that family relationship. Each of those jobs is short lived as Harold's nervousness gets the better of him. Beyond Endora adding to Harold's nervousness, Samantha may be more help in Harold's life problems than Harold is in teaching Samantha how to drive.
—Huggo