I purchased one of the $80 Monster Cable FM modulators / chargers when I bought my nano when they 1sy came out. So I was thinking the other day, why not use that as my car charger for my iphone. So I plugged it in and it charged just fine.... but the FM modulator did not work!!! Is this feature not available on the iphone? If so thats really horriable... that means I still need to keep my nano in order to play my music in my car or when going on a road trip? If so... they should not even offer the ipod feature on the iphone.. I RARELY use my headphones when I used my nano.. it was 99% through the car stereo. I was really suprised this did not work on my iphone.