LOL, I hear ya. I totally get that the cable shouldn't be used for anything else, but I'm suspect that a normal USB cable & Converter can't be used with the dock. I'm pretty sure that the data transfer pins of a cable are not used when a regular cable is used exclusively for charging devices, and bet that they used those pins for audio to provide a jack for those with FM tuners / aux in jacks Using a normal USB cable and 12V to USB converter, the pins wouldn't be used, or would be shorted (disabled) depending on the charger and cable. I guess well have to wait for someone who can verify it, but that's my guess at least. At least I'm hoping so, as my car has a 6 foot USB wired behind the dash with a behind the dash 12V socket and charger. I'm not a fan of loose cables all over by car. If we can only use Motorola proprietary cable with it, fat chance I'll be able to find one long enough.