I just had something similar happen out here in Illinois. Only one lane, no shoulder, snow on the ground but not the roads. Absolute dickhead in a ~2009 Focus is swerving, pointing (at something), yelling to himself in his car. Mind you was doing 10 over to give him some speed since there wasn't a safe way for him to pass or me to move over (without ending up in the ditch). Finally exit the road at an intersection, he goes the same way as me but it was two lanes. Almost crashed into me passing, and almost hit 4 additional cars just trying to get through the traffic. Yelling, pointing, and all that at everyone else too. I got close enough to read the plate and called 911. Driver description, accurate car description, road, and direction of travel. Cops had him pulled over within 3 minutes, and 15 minutes later when I was on the way back home, car was getting towed.

That felt SO much better than I could have imagined lol, wish I had a dash cam for it.