Son of a b*tch, Griffin finally made one, eh. Not to go off topic, but I knew about the scosche one and was considering buying it for my iPhone 3g car stereo connection for my Prelude, but then I bought the Z.
Maybe I'll get it for the gf, as I was going to stick the iPhone 3G 30pin-Honda Aux plug adapter from my Lude into her Honda. This way she won't need to get a new charger for the 3G.