That reminds me of something sort of similar I observed. I was driving with a friend who drives all day for a living. He said that the fellow drivers told him that if you want to get over and you're in heavy traffic, roll down the window, and say "Hi there, do you mind letting me in?" I watched him do it and sure he showed me putting on his blinker didn't work at all, but the direct ask always worked.
Is that assuming windows are rolled down or do they just speak nice and loud? I'd consider most drivers in my area to be relatively easygoing in heavy traffic but this sounds fun to try nonetheless.
