Anymore, in some places, being "in the way" of someone is taken to be just as much of a chest-thumping, penile challenge to some as the "wrong look" at an angry thug. We've all been there, when someone with more testosterone than sense gets tied in a knot because of some perceived, non-existent slight. Anymore, such things are taken as threats to be punished ... by death, if the opportunity arises. Murder, to some, has become the penalty of choice to inflict on others.
What a sad shadow of civility society has become.
Absolutely, this story is a good reminder of what NOT to do. Don't exit the vehicle if any of those sorts of indicators exist (raucous horn usage; swerving driving; blocking one's path; violent or threatening gestures/speech; etc).