There have been some discussions on peak oil and the total energy consumption. The gas tax is called a Pigovian Tax
A Pigovian tax (also spelled Pigouvian tax) is a tax levied to correct the negative externalities of a market activity.
The problem discussed in the previous threads is too much consumption, and no planning for the future. The solution to over consumption, is to increase the price (with a tax) so that hopefully consumers alter their long term energy consumption to more fully reflect diminishing reserves. That doesn't seem like the kind of a thing a Libertarian normally says, but since I worship at the alter of Alan and the following came up:
New York TimesMr. Greenspan was hardly a proponent of raising taxes on energy to encourage conservation, a policy prescription generally associated with the politicians and economists of the left.
Until now. In late September, as he spoke to a group of business executives in Massachusetts, a question was posed as to whether he’d like to see an increase in the federal gasoline tax, which has stood at 18.4 cents a gallon since 1993. “Yes, I would,” Mr. Greenspan responded with atypical clarity. “That’s the way to get consumption down. It’s a national security issue.”
Greg Mankiw used to be an economic policy adviser for President Bush, he's also started something he calls the Pigou club, both he and Paul Krugman and Al Gore happen to be fans of the Gas tax. Krugman has criticized about everything Bush has ever done. If both Bush's former economic adviser can agree with Al Gore there may be something to higher Federal rates.
This isn't going to solve energy problems, but hopefully it will provide a kick in the direction of alternate energy.
So the questions: You play the role of a US policy maker (The Decider) Would you implement a 50 cent increase in the gas tax to curb oil consumption? What are the downsides? Would this tax be regressive? What would you do with the money?