There are competing claims as to whether Mark Twain or Will Rodgers had fun with all the things that many people "know" that are not true. That's life. But in the an internet world, there is hope.
I often try to link to the data that Wendell Cox gathers and posts. His new post is dear to my heart, because I hear all the time about the "fact" that most western Europeans cheerfully use public transit, making them better human beings and also showing that public transit is not 100 years out of date. All those who "know" this to be true might pause to look at these data.