What has music added to the driving experience for you?

When I was about 16, I was hanging out a lot with my brother's friends (who were about 20), and I was really in my clic rock phase at that point (though I shouldn't call it a phase since I still love it). Anyway, we would just drive around all day in their old cars (with the smell of cigarettes and old upholstry) while listening to Led Zeppelin, Aerosmith, Guns n' Roses, Ozzy Osbourne, Van Halen, Pink Floyd, AC/DC, Steve Miller Band, Lynyrd Skynyrd, ZZ Top, Def Leppard, Rush, Boston, ect. We spent a lot of time hitting up fast food joints, teasing the order boxes, and video taping ourselves being stupid.