Speed Racer

So, does this happen to you? You are driving along at a steady speed, you are gaining on the car in front of you. You pull around the car at the same steady speed..and the other car speeds up! You go a little bit faster - so does he. You may even go faster yet - so does he. You have two choices: Go even faster to get around the yobo at which point usually he realizes how fast he is going and slows down again, or drop back behind the knucklehead and resume your steady speed. If you pick this option he will invariably slow down again which leads you to pull out to pass, and then he speeds up and....
Today it happened while on my bicycle. Here's this guy pedaling along in front of me. he would peddle for about 50 yards, then coast, then peddle, then coast, etc. I came along behind him, rode there for a minute, decided that I couldn't put up with the pace any longer, pulled around him to pass and when I came level with him he suddenly put on a burst of speed. I passed him but about a half mile later he came flying by pedaling for all he had. No problemo, if he wanted in front that much he was welcome to the position. Except then he coasted. And pedaled. And coasted. Until I was right behind him again doing the bicycle conga. Sigh.