I don’t mind paying a tax like this, but I definitely do not want a monitoring device in my car. You want to see how much use I make of public roads? fine. You want to monitor it with a device? That’s a privacy issue. A better way to do this would be to check the odometer during inspections, note it down, and add the tax to the fee.
The Obama Administration has discussed implementing a tax-by-mile system for drivers in the U.S. to raise highway funding.