My verizon car charger port is not the std mini USB -- it's got a flat side. That makes it so it can't fit in the v-cord splitter that ships with the phone and creates a port for a wired headset. Therefore, I can't drive, charge, and use the headset at the same time.

I assume there are std mini-usb car chargers out there. I bet they all output at 5v so I could use any of them, right?