The GPS technology is already “shovel-ready” and proven.
Rather than start from the ground up to design, test, and implement a whole new “smart” metering system-—which would take about a decade at the pace the government works (remember how long it took to get your watered-down HDTV?), it is more feasible to install a ready-made GPS unit and program it to dump its memory when given the correct set of commands. I do it all the time with my GPS device. I know everywhere I’ve driven in the last three years and how many miles. It’s all right here on my computer.
Cheers
All good points, but I think it’s going to be easier to implement something that’s connected to the car’s on-board electronic system rather than a GPS technology that seems to be easier to interfere with.