I understand what you are saying. I think as cyclists we want to believe that the simple act of getting on a bike somehow magically transforms people into reasonable more caring individuals. For some people it works. But human nature is what it is and the general population is made up of all kinds and they all can and do ride bikes. My point is, you take a dickhead and put him on a bike he's still a dickhead only he's on a bike now.

I'd just chalk it up to experience and realize that that route is not the one to ride for pleasure during peak commute times.