I haven't been able to find anyone with the same question, so here we are.
I realize that the GSM car dock works with the charging pins on only the GSM Nexus. Does the GSM car dock have a port for a micro USB to plug into the dock and charge the phone that way? Is the USB port on the GSM phone in the same place as the CDMA phone? Couldn't you buy a GSM car dock and plug in the usb cord and charge the CDMA phone on the GSM car dock like that? Where could one buy a GSM car dock? I don't really care a whole lot about the pin stuff, I just want to be able to keep the battery from draining in my car.