That's another topic for discussion, I hardly listen to music when I drive.
Usually only when I'm stuck in traffic, or parked waiting for someone.
I like the quiet so I can pick up any warning signs from the engine, or any other mechanical parts on the car, rattles, etc. That's the only way you find out that something is wrong with the car, before something gets really bad. With the music on loud all the time, it's easy to overlook little tell tale sounds here and there.
Well, of course, if I am driving on a long trip, like several hours, I would like to listen to the radio. But now that I got the Carrera, the engine is my sound system, there's really no better sound effects than to hear the German horses roar behind you!