The only fault in the iPod is it's battery life, I'm not sure if they've improved on it yet, and its sound quality. I always hated the sound quality of the ipod. I'd strongly recommend getting something that has a line out option like my sony Mp3 player has for cars and such. iPod is always a nifty little thing to carry around, its small and everything, but the sound is what you're looking for best in a Mp3 player, and it isn't with the iPod. I think sony may have come out with some higher capacity players other than their 20gbs, I'd STRONGLY recommend those because its just great for aux. inputs, and they've got a line out sound option for when you're using larger speakers, or in your case, a car. Sure the headphones make a difference when it comes to Mp3 players, but you've got to have some decent sound settings within the thing too.