has anyone used a bluetooth device like this in their car? looks like it enables iPad mini audio to be played over cars speakers via bluetooth. also plugs into 12v so it never has to be charged. it also has a usb port to plug the iPad mini into to keep it charged
http://www.ebay.com/itm/Car-3-5mm-Audio-USB-A2DP-Bluetooth-Handsfree-Stereo-Hifi-Music-Receiver-Adapter-/201116229423
http://www.ebay.com/itm/Car-3-5mm-Audio-USB-A2DP-Bluetooth-Handsfree-Stereo-Hifi-Music-Receiver-Adapter-/201116229423