Good question, but wrong road to the right answer. [AlleyInsider]
Specifically, a gas tax that fixes the price of a gallon of gas at $4 a gallon nationwide, with the tax being the difference between the market price and $4
As regular unleaded in LA was going for $4.66 a gallon with $.36/per (I think that's about right) in state and federal gas taxes last summer, I would be okay with a $4.00 cap. Of course either way, I'm still paying out the caboose for a gallon of texas tea.
Here in the Golden Shower State they've also been ruminating on a pay-at-the-pump no-fault auto insurance plan that would raise gas prices to 6 or 8 bucks a gallon even without the tax.