From the posting:
Ever wish you could do something to get the idiot behind you from riding on your tail down the highway? Over in England, Colin Fruze developed a way to keep drivers away. He built a flamethrower into the tail of his motor scooter. Trust me, you don't want to follow this guy too closely.
However, the article ends with the author stating he'd been told that using it on public streets would be equivalent to using a firearm. Still, it would be quite amusing in the short term until the cops caught up with me.