I'm not exactly sure how I feel about this one. On the one hand, gas taxes are
intended to help pay for maintaining the roads. The theory behind using gas taxes for this purpose was that the more gas you used, the more driving you were doing and thus, the more wear and tear you placed on the roads. With hybrids and electric cars, you are still using the roads just as much as with a gas car, but since you are paying fewer/no gas taxes to maintain the roads.
On the other hand, the money received from the gas taxes is all too often raided to fund liberal programs, and the roads become pothole filled hellholes anyway, so I don't mind starving the beast anyway we can.
Of course, I love the irony that these extra fees would hit liberals dis-proportionally...