It varies, 'cause I'm always mixing it up. But the long drives often result in me associating a particular artist or album with a certain trip.
Trip last spring it was Marshall Tucker. Another one, Little Walter & Howlin' Wolf (Chicago blues harmonica). There's been a lot of Niel Young, Alison Kraus, Chet Atkins, Bill Monroe, Lonesome River Boys, Jack Johnson. Remember a couple trips long ago with Nancy Griffith and Mary Chapin Carpenter, another Johnny Cash. When I hear "I Am Woman" it reminds me of duck hunting trips with my dad and brother when I was a kid. Hate the song, love the memory.
Gavin -- you've always got something interesting in the car. I like it when you're driving!
Satellite has made it possible to hear a lot of different stuff anywhere, but I get plenty of that day-to-day. When I'm hitting the road, I set up a playlist on the iPod and listen & learn something new.
Long drives home on Sunday, I'll often listen to Prairie Home Companion to get my fill of corn(y).