From Kevin Walker's column in the Tampa Tribune: http://tampatrib.com/baylifenews/MGA6B5T3NPD.html "ROCK AND ROLL'': The Cadillac commercial that uses Led Zeppelin's "Rock and Roll'' affected Paul G. Miller, just not as intended. He wrote, "It reminded me I was a huge Led Zeppelin fan. Although I am 52, and still work, and won't buy a Cadillac any time soon, the commercial inspired me to buy myself a present: `The Complete Studio Recordings of Led Zeppelin.' "So, advertising does work. Don't tell Cadillac, though. I don't think they'd understand.''