I was there in 2011. They were nothing but civil. SoWo doesn't even compare to what I saw when I was there. Constant Burnouts (Gummi), piles of trash, lots of issues.Wrong Wörthersee. This is for the Austrian show, not Helen GA.
The europeans seem to be a bit more civil when i was there in 2012. They had a drift/bike stunt show, if they put it there so "the kids" get it out of their system, it seemed to work. Maybe SoWo organizers could designate a open lot and have signups for drift/burnout competitions for the same effect.