I wondered how long it would be before we saw one of these: http://home.swipnet.se/ridax/connipod.htm It allows you to use your existing Firewire charging devices (like speaker docks, car stereo cables, etc), with your iPhone 3G. Not sure it would be the answer for speaker docks, but it would sure be a good option for Car Stereo head units that only supply Firewire power. Seems a bit pricy, but hopefully Griffin, Belkin, etc will come out with similar devices in the near future - at half the price point. I just replaced a perfectly good Car charger with a new one to support USB, and I have at least two Firewire chargers around the house that I have been replacing with the USB versions. It's a chore to determine if a charging device supplies Firewire or USB power. I ended up e-mailing Griffin to verify which of their models support USB charging. it turns out almost all of the basic ones do (ie the PowerJolt), except for the ones with the iTrips built in, etc.