I recently purchased a Pioneer car stereo with USB input and I am trying to decide what my best option for digital music is. I have a 2GB 1G Nano that I use for my walk to work and my workouts. I want something in my car semi-permanently. I am thinking about an older iPod (maybe a 20gb) to put in the car. My other option is a harddrive mounted under my seat. I think the iPod solution would be easier if I could just find an inexpensive older iPod. What do you guys think?