Taxes on car gas are high enough. If oil remains high, I think the government should consider some sort of pro-rated jet fuel subsidy. I believe in free market capitalism, but the loss of an airline or two based on oil prices will do this economy great harm. There's no need to completely subsidize jet fuel, but a system which reflect different levels of price might be fair. If oil exceeds X price, then the government subsidizes Y price. Just a thought.