Just in case anyone is interested in tethering a MAC to a Verizon Blackberry via Bluetooth, I thought I would provide a link to the instructions I found on the internet. I have also uploaded a screenshot of the settings. The password should be vzw. You would replace the number signs (3) in the the USER NAME with your BlackBerry’s phone number.
Another thought about the wireless router for your car. It sure seems like RV Manufacturers would start offering this as a factory installed feature / accessory.
RVing Expert's Blog 