Politicians are debating a national driving tax that would charge motorists by the mile:
A driving tax could either replace the current 18.4 cent a gallon federal gas tax or, possibly, add to it.
Tim Haab reiterates that a gas tax would solve all the same things:
Taxing gas on a per gallon basis has the potential to meet all of these goals. l've stated this all before in the form of a Fuel Efficiency Payment (yes I know I keep linking to that post, but I'm hoping eventually I will get my point across): An $X per gallon gas tax is the same as a tax on low fuel efficiency, a tax on driving, a tax on externalities, a tax on road use. The only thing it doesn't address directly is congestion (that would require peak load pricing), but it does address congestion indirectly in the form of fewer vehicle miles travelled.
The Dish 