Florida man, Marco Mazzetta, posted a dashcam video to YouTube that shows him taking shots at another vehicle while driving on an expressway.

Mazzetta claims that there was bit of a road altercation between him and the other vehicle during which the driver of the other vehicle flashed a gun at him.  Feeling threatened and that his life was in danger he brandished his own gun and started taking shots.  You can see the video below.