Yesterday's drive-thru windows and super-sized meals are yielding to the self-service kiosks and lighter, snackier diets of today as fast-food chains ... it a more down-home design.

McDonald's had grown into an increasingly popular fast-food establishment. The first drive-thru was introduced in 1975.

Not all of them are used in fast-food ads—fake ice cream, for instance, probably wouldn't appear in menu photos. The restaurants wouldn't talk to us about their food styling, but McDonald's ...