Now that I finally have an iPhone with a 3G connection I can finally do what a lot of other people are doing and that is listen to satellite radio and other international stations in the car. All you need is a 3G capable iPhone, an iPhone radio app and a way of connecting the iPhone to the car stereo.
My setup is an iPhone 3GS with the WunderRadio app and an Alpine iDA-X001 head unit with which my iPhone connects to using the dock connector. If you aren’t as lucky you could use an FM Transmitter or RCA inputs. With WunderRadio you can connect to XM and SIRIUS stations in addition to thousands of other stations from around the world. For example I can listen to Lebanese radio stations like Radio one or Mix FM if I want to. Its not perfect since sometimes the connection disrupts for a few seconds every now and then but thats mostly only with the XM and SIRIUS stations, haven’t had trouble with the rest.