Tuning in to the evolution of car radios

It's the perfect "California Dreamin'" fantasy: Riding in a Mustang down Sunset Boulevard with the car radio going. Almost from the beginning, the radio has been our traveling companion, playing the song of the open road, or helping pass the time when the road isn't so open. From pop hits to preachers, and pretty much everything in-between, the car radio has been part our lives for almost 100 years.