Here's what I think happened. Car hits bike and probably doesnt realize it or maybe they did(Happened to me on pleasent hill), biker is furious they are driving off. He probably even motioned for them to stop, 2 daughters call there daddy that someone is following them. Daddy gets furious and waits for them with a gun, biker drives by wondering who daddy is continues to drive by as he decides what to do, turns back around and realized he has a gun and rides off.