I have been obsessing about building the ultimate (possibly fixed gear) commuter, and recall seeing fenders on newer mamacharis with built-in super-bright LEDs. It may be that they are powered by the main battery on e-bikes, but I was hoping I would be able to find fenders on Yahoo Japan or Kakaku.com or Rakuten with built in LEDs for the fixie commuter I have in mind (powered but a dynamo (the thing that turns and creates current as the wheel spins) but I can not find them. I can find lights, fenders, but not the combination of the two. My Japanese skills are far from good. Can anyone send a link?