Sharing data via bluetooth in car

[bigwilly087]

I am shopping for a new car, and one I am looking at (2012 Camry) has Entune built into the dashboard interface. It basically provides navigation, gas prices, pandora, etc, using the data from my Galaxy S3 via bluetooth. I am currently on an unlimited plan with verizon, and just want to see if anyone has any experience with sharing data over bluetooth causing them to lose the unlimited. I've shared my 4g using FoxFi a couple of times without issue, but just wanted to be sure before I count on using my phone as my car's data service.

Thanks for any advice