Oregon ran a pilot program in 2006 and 2007 that fitted 300 cars with GPS receivers, which kept track of the cars' mileage. The receivers also kept records of when the cars were on the road ...

The idea went nowhere, but this doesn't mean that a mileage tax is unworkable anywhere. In fact, Oregon began considering a mileage tax at least as far back as 2001 and started working with 300 ...