Seems like a concept better tweaked to augment a brake light than a running-tail light.
In the end though - it's a non-starter for me, at least as far as the Calvin is concerned. Hell, I need a combination of a magic-bead-seat and sheepskin cover to generate electro-static friction in order to augment the Flintstone's alternator they put on those things.

Higher tech to keep me safe from tailgaters? Build me up an EMP emitter to shut down the clowns trying to read the date on my helmet stickers.
Todd.