There must be some sort of psychology that kicks in when somebody tries to pass you, that more or less forces you to speed up. It's like, "oh, I didn't realize

There must be some sort of psychology that kicks in when somebody tries to pass you, that more or less forces you to speed up. It's like, "oh, I didn't realize I was going slow until I saw you try to pass me...let me speed up a tad." This seems to happen in any passing situation, whether on a two lane road with a passing lane or an eight lane highway.