I have been playing with hypermiling (the idea that how we drive affects our gas milage) for a few years now, and I find it very entertaining. I mostly enjoy the reactions I get from people both on and off the road when I’m doing it. But today’s reaction was perhaps the best I’ve ever seen. But before I tell that story, let me explain what I do, and to a certain extent, what hypermiling is. When I drive I try to get the best mileage out of my car as I can. And to do so I have a number of driving habits that are different from other drivers on the road, including: