I can see a Far Side sketch with the caption as follows ,The perpertual non movement of traffic was just a theory until resently ,know has respectfully been proven as fact.
IThis was a laugh, recently I witnessed a driver behind the wheel of an auction bought cop car driving down the shoulder ,the aggrevated cars in traffic honked their horns as he passed , rocks dinging cars as he speed by,well ,fake cop meet a real one and as he was getting a ticket he got to hear it from the slow moving traffic as they passed by ,that was carma x 2.