Fuel tax could be replaced with by-the-mile road tax

(The Kansas City Star) - The year is 2020 and the gasoline tax is history. In its place you get a monthly tax bill based on each mile you drove — tracked by a Global Positioning System device in your car and uploaded to a billing center.

What once was science fiction is being field-tested by the University of Iowa to iron out the wrinkles should a by-the-mile road tax ever be enacted.

Besides the technological advances making such a tax possible, the idea is getting a hard push from a growing number of transportation experts and officials. That is because the traditional by-the-gallon fuel tax, struggling to keep up with road building and maintenance demands, could fall even farther behind as vehicles' gas mileage rises and more alternative-fuel vehicles come on line.