[tormeh]

How is the odometer data supposed to be collected? Weight is easy, though. I guess you could let the car phone home a couple of times per year, but the consumer still owns the car and can do a lot of shady stuff with the odometer, I imagine. Better to just use a flat annual fee with modifiers for weight. Trucks and other business vehicles can be assumed to travel a lot, so higher taxes for them.

[digikata]

I think the car-to-car variation in annual mileage traveled is too wide to fairly assess an annual fee. A secured odometer box checked during periodic vehicle inspections would be enough to reasonably raise the bar on mileage, but unfortunately more invasive solutions always seem to get suggested - e.g. GPS monitoring of mileage, or pervasive license plate tracking etc...