well some car recievers(like mine which is still stock) have a AUX port built in them them and you can plug the ipod in to that. not as good as a BMW one but it does keep everyting digital. I still want something where I could fold down the face plate. slide my ipod in then put the face plate back up and be able to control it from the controls on the face plate and I would like it to still able able to play CDs