So what does the Zune In-Car kit do? It plugs into your cigarette lighter and into your Zune, and transmits your music on an FM frequency of your choice so that you can tune in your car radio to listen to it. Perfect for car music systems that don’t have an aux socket.

What about the Zune kit then? Well, when you unpack it, it’s evident that this is a fairly classy piece of kit. Yes it includes the necessary plug for your cigarette lighter and for your Zune, but also provides a nice digital display that is magetised so that it can easily be slotted onto the end of the cigarette lighter plug.

More detail with screenshots : Here