The GOgroove FlexSMART X3 Mini Bluetooth FM Transmitter with Hands-free Calling, Audio Playback, and USB Charging is a very good Bluetooth adapter/transmitter for your car. I've been testing one for a few weeks and it works as well as anything else, perhaps even a bit better than most. Amazon has been selling it for $49.99, which is half off its retail price of $99.99. That's not bad, but if you use the secret coupon code DEALMINI you get an additional $10 off, dropping your price to a historic low of $39.99. Oh, and, of course, shipping is free... but you better hurry 'cause this deal disappears on July 15.