Innovative lighting system for bicycles, successfully funded on Kickstarter, maybe nearest thing anyone gets to having a TRON-like light cycle:
What is the Revolights bike lighting system? Our lighting system consists of 2 thin profile LED rings (white in front, red in back) that mount directly to each wheel rim (just below the brake calipers) using a series of rim specific clips. Power is supplied via a thin wire to the hub where a lightweight and slim, USB rechargeable polymer lithium-ion battery is held in a special bracket. A small magnet is secured to the fork to provide speed and orientation information to the rings.