The Solio Communicator is a solar-powered hands-free kit for mobile phones, useful for when you’re out and about driving. The communicator works with all Bluetooth cell phones just like any other handsfree kit, the only difference is that it’s powered using the sun.
If there’s a lack of sun in your part of the world (e.g. the UK!), then then the Solio Communicator is also chargeable from the cigarette lighter port, a USB port or a mains wall adaptor. It will retail for around 80 Euros and will be available from around mid to late 2009.
Source: GadgetFun