Belkin TuneBaseTM FM Transmitter With ClearScanTM For iPhoneTM/iPod®
This is a great product. The only time I had difficulty with it was when driving through the mountains.  Everywhere else it has been awesome. It's just lame that my radio died and I can't use it now! I Recommend this product to anyone! especially at the price it is selling for on here. I got mine at best buy for 100 bucks!