How about this... A Car iPod that fits into your car just like an aftermarket CD player that has: AM/FM Tuner Airport Capability Rendevus Technology CD Player? Hard Drive So when you pull into your garage your "iStereo" automaticly sences your Mac and connects and downloads new mp3's from iTunes. SmartLists could also be added. ex. you want all jazz music, punch a few buttons on your "iStereo" and when it syncs up it erases all old music and downloads all jazz files.