Motorola so had this down pat last year, but we suppose O2 is just showcasing its pedal-powered charging system now that such devices are all the rage. Just days after we had a look at two unorthodox chargers from Orange, along comes rival O2 with a bicycle-related alternative. Reportedly, the eco-friendly device will be demonstrated at the O2 Wireless Festival in London's Hyde Park, but unfortunately, each of the demo bikes will be stationary. Still no word on whether O2 has a mind to take this thing commercial, but for cyclists the world over, here's to hoping it does.

[Thanks, Adam]