It’s called “Road rage”. This condition can be pretty devasting. The onset is unpredictable and usually quite sudden. I have treated quite some number of people who, in a flash of time, found themselves with this condition. And I have developed a theory about why road rage arises. Operating a vehicle requires very complex brain functions. Simultaneous attention to speed, other motorists, the dash board, passengers, distractions, road conditions all takes a heavy toll on the brain even when we can operate the vehicle almost mindlessly. Still the brain gets saturated and overloaded. Road rage can then erupt. Being very aware of this potential is probably the best prevention.