This is old news by now and my source is not impeccable, but I asked the question a few days ago, “Who sold the rights for commercial use of Led Zeppelin’s music to Cadillac?”
Apparently, Robert Plant and Led Zeppelin did. Scroll down this Led Zep tribute site and you’ll see news photos of Plant at Cadillac’s 100th Anniversary celebration.
I’m shocked. Shocked, I say.
Guess all that money from the ’70s ran out. But it says something interesting that they still control their music, unlike the Beatles and lots of other musicians. Good for them.