In Budapest, it happened years ago that I was a co-passenger to my mother on a weekend errands run, and she drove in the inside lane on a 2x2-lane main road with the maximum allowed speed. As it happens, another guy in the outside lane drove not much slower, blocking the way for speeders, which we noticed when one idiot slipped through the "hole" and rushed in front of us just after we started to slow down for a red light. Then the idiot jumped from his car, walked straight up to my mother's window, and began to shout some incoherent and highly inflammatory drivel about why she held him up on purpose. In that case, I judged he'll soon escalate his rage into some physical attack if I don't do anything -- so I emulated him by jumping from the car and shouting, which proved unexpected enough for him to walk away (at least I'd think those who met me at the Prague meetup can confirm I don't look scary).

_{*Lunatic*, n.
One whose delusions are out of fashion.}