I have a JVC KD-HDR1 high definition CD player with an attached KS-PD100 iPod adapter in a vehicle I own. I already purchased the Griffin charge adapter to convert FireWire to USB charging so I could use the stereo with my iPhone 3G. I had my doubts about this setup working with my iPad 3G but it works. In fact, it seems to charge almost as fast as with iPad wall adapter. Now I am going to purchase a cablejive 6' dockextender so my wife can use the iPad and charge while we roll. The head unit needs to be set to external-in for this to work. With this setting you can't control the i**** from the head unit but it charges and passes audio.