Radio advertising of American Automobiles during the 1930s

In my The Automobile and American Life (2009, 2018), I spent considerable time discussing the history of automobile radio during the. 1930s. Crosley, Motorola, Philco, and other companies began making rather bulky expensive sets that became popular very quickly, even with inherent difficulties associated with vacuum tubes and poor antennas.  What I totally failed mention, however, was the role of radio in advertising automobiles during that same decade. I can’t believe I was so superficial!  Above is one example, but there were many.  In addition, some of the most popular radio shows were sponsored by the car companies. Much more needs to be said about this topic, as Americans grow to idolize this wheeled objects as perhaps no other possession.