I used to ride my bicycle around DC a ton while I was in college. One day I had an ass in a small pickup cut me off and send me into the curb. Damned near killed me. I got lucky and was able to stay on the bike and not ditch. The bastard stopped at a light a couple blocks down and with all the effort I could muster I sped up like hell. As I passed him I put out my right foot and smashed off his drivers side mirror. Took the next corner and slipped down a few side streets but I don't think he ever pursued me.

Not your situation but I understand the frustration. However, had I taken a moment to think I'd have just let it go. See eternalredneck's math above. I got lucky.