We already pay gas taxes based on how far we drive. If you drive more, you pay more gas taxes. No point to this unless everyone starts driving electric cars, because other than offering an opportunity to spy on everyone and quietly double the tax rate, it wouldn’t make much difference.
Speaking of which, it's time for me to go to work in my gas guzzler (only 28 mpg) along Texas farm to market roads (42 miles one way) to work in one of the last factories in the U.S. so I can earn the money to pay for this computer and it's DSL service