Your car should already have bluetooth in it. The bluetooth is limited to telephone functions, it will not play Pandora for you, for example.

Getting your phone to pair with the car is a bit of a trick, timing is everything. Holding your tongue against the roof of your mouth while spitting wooden nickels seems to help too.

Seriously, timing is everything. Once you get the phone to pair, then it will connect each time you get in the car, you never have to deal with pairing again, unless you want to add another phone.