Griffin RoadTrip

The RoadTrip was a developed by Griffin Technology for Apple's early iPod models. It allows any iPod with a 30-pin dock connector to play its music in the car through the FM radio.

Description
The RoadTrip can broadcast in FM frequencies ranging from 88.1 to 107.9. It requires no batteries and can draw its power from the car's power / lighter receptacle or a USB port. The 30-pin dock can also charge an attached iPod.