Good idea, but unknowing motorists (whilst it picked up popularity) will just see a light on the floor and look down at it wondering what is that ? , while possibley turning in front of the bike they should be looking at instead.............now if they had a jacket with a big green LED bike on the front and back, great !.....i think focus should be on the actual thing your trying to avoid, otherwize it will mess with peoples percetion of distance, especially at night.