by mtuandrew
andegold wrote:When calculating the shrinkage of the gas tax due to inflation don't forget to also take into account increased fuel economy of vehicles. The gas tax is a fixed price per gallon, not a percentage like sales or income taxes. As cars become more efficient they use fewer gallons and pay less tax regardless of the price per gallon at the pump. A Tesla, or plug-in hybrid, filling up with electricity is no different than a diesel owner using heating oil instead of diesel for autos. Even within the gasoline only world you need consider that while total vehicle numbers and mileage may have gone up the number of gallons consumed per vehicle mile has probably gone down and therefore the amount of tax paid to maintain that same level of wear and tear on the road has gone down as well.The Prii of the world notwithstanding, more damage is done to the lack of fuel tax/poorer road condition ratio when a semi gets 2 mpg instead of 1 while hauling heavier trailers.
As for Amtrak LD, I hope the diner-lite concept doesn't go west to stem some losses.