> "the first is way more common." Is it? Figuring out total fuel costs is the sort of calculation I run once in a while. When I buy a new vehicle, or when I'

> "the first is way more common." Is it? Figuring out total fuel costs is the sort of calculation I run once in a while. When I buy a new vehicle, or when I'm planning a long trip, I figure out how much I can expect to spend in fuel. I'm almost always at a computer when I make this sort of plan, though. But when I'm actually driving and having to do calculations in my head, the range calculation is far more useful. Am I going to have to stop for gas between here and there? Should I fill up today or can I wait until tomorrow? Can I make it to Colby or should I fill up in Goodland? This subject comes up every time I take a medium length trip, and several times on a long trip, as compared to the other calculation which comes up only rarely.