Don't know if this was ever discussed, but i figured i'd share..If you have a stock headunit with the usb port you can plug your ipod into it and it will not only charge your ipod but also you'll be able to control it through your radio and steering wheel controls. I think it has to be a third gen nano or newer or any other third gen and newer ipods. You also need latest ipod update. Cool thing to is that the song info shows up on the the radio. So no more expensive $150 interface.