I was unsure about how well this, or any other FM transmitter would work, with the interference from radio stations. But it works very well. I can hear the audio clearly, without much interference. In addition to letting you listen to your iPod, it also charges it.
The one thing that I need to get now is a cup holder stand for the iPod to keep it in east reach. I am sure that someone make something like this, but I didn't see one at Fry's.