“The Sweetheart of the Supermarket Set” slogan is one that would never make it in today’s politically correct world. This is an ad aimed at buyers looking for a car that’s economical and affordable, which Mustang was with the standard 200-cubic-inch inline-six while still providing a healthy dose of style. It’s was important to point out the relatively compact Mustang did have a large enough trunk to go shopping since many Americans were still used to absolutely enormous cars then.