N and I almost always listen to the radio in the car. Occasionally I listen to CDs, and even more rarely my iPod via a local radio transmitter--I know, I know, don't make fun. I've noticed I'm much more in tune with pop music now, especially as compared to my now-long-ago pre-driving days.
I like that I can find music and artists that I would not otherwise. Today, for instance, I heard Roll Away Your Stone by Mumford and Sons for the first time. I'm glad I chose to go to the grocery store when I did.