In the late 1920's, consumers dubbed the term Fordism. This represented a seed of belief and change. The Ford Motor Company strictly adhered to their industrial design and continuity. Ford said, "The way to make automobiles is to make one automobile like another automobile, to make them all alike, to make them come from the factory all alike, just like one pin is like another when it comes from a pin factory."
Around the time of Fordism, America began to isolate themselves with regard to design, culture, and social conflict. This tremendously effected advertising and product development. As more Americans bought Ford cars, they became integrated into leisure and work activities. Thus the perception of luxury was used by General Motors (GM) to capitalize on the competition's uniformity. They did this by distinguishing their vehicles with colored enamels and new elements of machinery. The changes "rarely required significant engineering changes or substantial capital investments"; in a nutshell, they weren't really better. Through market research GM also learned, this mode of production would increase novelty and consumer appeal.
Below is an old school GM refrigerator ad outlining the benefits and product attributes. These are all physical advantages to the product. Next to it is a fairly recent ad from LG. Here they give us, not only, a visual for the physical advantages, but also give their perceptual two cents with the couple dancing at the beach.