Infographic: 82 years of car radio

(CBS News) It's hard to imagine a world where cars don't have radios. Surely the people driving around in Model T's had something to keep themselves amused on long rides? But no, it wasn't until 1930 that the first in-car radio hit the market. Since then, it's been constant upgrades from mountable radios to the "integrated infotainment systems" in vehicles today. This helpful infographic traces the 82-year history of on-the-road entertainment.