Hanja, a London cyclist, created the Arm Against Harm. Her invention uses a card board “arm” holding a crayon to keep drivers a safe distance away from road cyclists. Should they come too close, they’ll get a long stripe down their door. But why stop there? I don’t see why my Arm Against Harm couldn’t be holding a key. While it may never reach the market place; it’s a fun to dream. Full story Here.