Yea, but it's fun....
One day I was rushing home from duty, I got a bad hot dog on the side of the road so I threw it out the car window, it hit the windshield of the van behind me. Since that day I have never littered again.
Seriously, we assume risk everyday just by driving. If you can't handle the idea of risk to the point of preemptively regulating the conduct of really benign stuff than you should take the bus or train. I saw a girl picking her nose while driving her Prius, I laughed so hard I almost had an accident, shall we make nose picking a crime as well?