As far as I can tell, there is no car dock for the S III like the one I had for my DroidX, that supplies power via a fixed connect, puts the phone into docking mode, and keeps the screen from turning off automatically. I got a holder, but I have to find the end of the USB cable to plug it in, and the screen turns off after a minute just as though it were lying on my desk. (I am happy not to have a special docking screen get in my way as on the DroidX.) Any suggestions about keeping the screen on or anything else?