PocketMatrix

BT is adhoc, and you can connect to many devices at the same time. The BT stack sucks in most devices, so don't expect it to work much, if at all.

I was thinking of getting a seperate SDIO card, not use the stack in a device. I was hoping to get a bluetooth GPS and T68i and just toss those in my car, place the iPaq in the cradle that sends sound to the stereo through FM and then viola, I've got an MP3 player/turn by turn voice directions/mobile internet.