For me i have a stock stereo in my 07' Altima with a AUX port on the front. No Built in Blue Tooth. I'm going to pick this up at the end of the Month. If you want it Check your Local Verizon store.
I think HTC Stereo Clip Set Your Location is it.
Luckily for me, my car has a usb port, so, I just plug in a usb drive.
I have had one for over a year. Purchased it at a Sprint store when the One X came out. It works flawlessly with the DNA in my 2011 Nissan Maxima. The nice benefit is that the DNA will auto connect to my car Blue tooth for calling and the HTC stick for stereo. The frequency response is also excellent as you don't haveto crank the volume up too much when streaming music. I tried the new BlackBerry Bluetooth stereo bypass and it worked but I had to turn my stereo upto almost 75% just to equal the ssound level of the HTC at about 30% volume.