During our two driving trips to Alaska I had the habit of waving to on-coming rv's as we traveled the Alaska Highway. The on-coming drivers very, very seldom waved back. When a driver failed to retu...
I also wave at bicyclists when I am in my van -- as support and to let them know I see them -- and try to restrain myself from waving at people with the same model van as mine when I am on my bike. I have to remind myself, 'Naio, they don't know why you are waving.' But I want to wave!