his HPFP just failed, he didn't want the Mazda owner spreading the rumor about BMWs being unreliable so he just pretended to be an asshole, perfectly reasonable explanation
UFB!! The guy in the bimmer is an azzhat....A lot of peeps keep pistols in their cars. This guy was lucky he didn't have a bullet hole in him.
Not only a jerk but an incompetent driver. No reason to hit the binders on the first corner & he missed the late apex on just about all the curves. He was just angry about his own ineptness.