And if the cost of fuel goes way down, everyone should get off scot-free, right? This writer doesn't understand neither mathematics nor economics. He can toss off an idea but can't see it from more than one angle.

But he's sort-of on the right track: Should we be thinking in terms of miles per gallon or in gallons per miles (or gallons per 100 miles)? I guess one's more meaningful than the other depending on whether you're a farmer or a travelling salesperson. But if you endorse inverting the ratio, then now's a good time to start using Metric.