I've had this with older phones, so I figure something like this must be out for the iphone. I want a car dock, and once my phone is docked, I want it to charge, play music through my stereo and provide speaker phone functionality either through cables or bluetooth - but I don't want an ear piece, I want the sound to come through a speaker or my stereo, and my voice to be picked up by a bluetooth or hard wired mic. I was able to get this setup for a Samsung i700 and a Palm Pilot treo... I know the unit is probably going to cost 2-300 bucks and installation will probably be another 200. Anyone know of such a thing, or one in development?