My H used to do this kind of thing, just go OFF The Rails at the slightest provocation, especially when driving. To me it was a complete lack of self control that he Had To get a grip on, an immaturity that was inappropriate, given his age. And I felt he was endangering us, road rage can go horribly wrong if someone is packin'...
I would get so upset at his getting upset that he finally took stock and stopped the childish acting out. But then I sorta forced him to see it from my eyes when I filmed him. He never knew what a jerk he looked like until then.
Just my true story...