On our way out of the football game with Johns James and Adams the traffic was very snarled. We kindly let a car merge in front of us and then they failed to give the thank-you wave. So after we all agreed this was an egregious John Adams leaned out the window and hollered at them a little. They perfunctorily waved but a minute later upped the ante by running back to our car to deliver a handwritten thank you note. I still hate it when people fail to wave.