Battery-free, magnetism-powered cycle lights

Now call me harsh. Not straightaway. But cyclists who ride without lights in the middle of winter almost deserve to get bumped like the smug one-way-flouting rider in Alexei Sayle's The Dog Catcher. I justify this as a fellow cyclist and an occasional driver who knows unlit bikes are invisible 'til the last second. Anyhow, enough ranting - you want to know about these literally brilliant 'Reelight bikelights' that work without batteries. Nope, we're not talking about hard-to-fit dynamo lights. These LED newbies work using electromagnetic induction  - GCSE science reminder for me and others here - and are a cinch to install. The lights attach to each wheel's axle and the magnets go on the spokes. Net result: green transport, green lighting, less battery dosh and less bumping by buses. In the UK they're on sale from Goodbye Batteries at £25 a pair. More info over at Reelight.