Mileage tax

Gas tax revenue down, officials eye mileage levy

This just sounds like a way to make higher mileage vehicles even less economical to individuals, not to mention the loss of privacy concerns. If I had to choose between the mileage tax and increased tax on gasoline, I would choose the latter.  It would continue to provide an incentive to use less fuel, and to use it more efficiently.  And privacy concerns wouldn't be any more of an issue than they are now.  But, it seems that wherever personal data accumulates, the government decides it needs to use that data.