When my now-grown sons were young, we took a lot of car trips. On one particularly long journey, after we’d exhausted the usual repertoire of the license plate hunt, Riddly Riddly Ree, and Twenty Questions, the boys came up with a game of their own. They made two signs on pieces of drawing paper. One sign said “Hello!” That one went in the front passenger window. The second said “How is your day going?” The boys held that one up in the back passenger window. It then became my job to pass as many cars as possible.