[brucepick]

TIn addition to redpoint5's two options above, there's a third: have states increase their gasoline taxes. I would do that along with using income taxes to partially fund highway infrastructure.

Income tax - as redpoint5 says, we all benefit from the roads, so all should pay.

Increased fuel tax - the European method. Nothing wrong with raising the rate in the face of dropping consumption. There's nothing like $5 or $6 or more per gallon to get people to conserve. If you think $3.xx is your limit, you may have to choose between not using it or stealing it. Some say that's basically what we're doing at $3.xx/gallon because apparently the real cost is higher.

I'm modding for FE in preparation for those higher prices that may well arrive. Not just for today's prices.