i would of decked that dude in front of his family and said somthing completly of topic to him to make his family disgusted in him, and to let me get away.
give some one a drive in your car, and they take that previlege and chuck it out the window, then to just ignore you when your telling him to calm down, not everyones car is driven to be thrashed.
i've let my gf, my parents and my brother drive mine. they all took it easy on the car untill i told them to open it up. which was fine.
that guy is a tool head.