These assertions that nobody "needs" this and that are really irrelevant when it comes right down to it.
I mean, what do people really need? Food, water, air, shelter? Nobody NEEDS a car at all. Nobody NEEDS trains either, for that matter, or TVs, or more than two lamps per house, or computers...
People WANT these things, and there's nothing wrong with that. People want cars and computers and cellphones, and they invest their money in these purchases to fulfill their wants. Who are you to tell them they're wrong? Some people choose to buy big, inefficient cars because that's the direction they want their lives to go, and there's nothing wrong with that. It's the hight of arrogance to make assertions that they don't need the big cars and therefore should go with the smaller ones.
And no, I think people have once again realized that gas prices are going to continue trending up, so they will shop with more of an eye to fuel efficiency than they have lately. The world is changing, as it always does, and the current track it's on means higher gas prices. And in the end, you just have to let people make their choices and suffer the consequences when they fail to take higher gas prices into account when buying a gas guzzler.
Make people pay for the real, legitimate costs of their purchases and habits--make them pay for their gas, liability insurance, and costs of highway infrastructure--but don't be so arrogant as to "show them the way" by taxing them into doing the "correct" thing. These savages don't need taming.
First of all, the fuel tax doesn't cover the cost of highway construction. It should. That is plain and simple. The motorists, and motorists alone, should pay for the direct costs involved with modifying the world to bow to their choice. Highway construction, auto insurance, road construction, and so on. It is fair, I'd thnk you agree, that a fuel tax, which due to the nature of it, charges people based, atleast with a reasonable correlation, on how much they drive. There is more than just the highways, though. There are highway patrolment, for one.
Now, some of there being there is the responsibility of, and paid for in part, people who break the traffic code. But not all of it. The patrolmen who assist people with broken down cars, changing tires, enterin their car that they locked themselves out of, pushing cars off the road, and so on is part of the cost of operating a highway system. And so should be born, in its entirety, by the fuel tax. People who violate the laws should simply be paying their money into the general fund.
Fair statement that any libererian like you should agree with: Users of a system should pay its full cost, non-users of the system should pay nothing. And when it comes to taxing for the paying of roads, they should at least pay that.
However, here we come to a more murky water. Cars don't just take up space with their roads and their parking lots. They also pollute. They pollute, they damage the enviroment, they create air pollution, noise pollution, etc. Some of that simply costs money to clean up. There is probably a distinct price that could be put on the actual clean up of physical pollution. That too, should be in the fuel tax. I have the right to damage something. I have the right- and responsibility- to pay for that damage. That is, to me, fairly clear.
However, lets go into a water more murky still. Not everyone can drive, Volkris. I'm borderline, my eyes keep getting worse. A hundred years ago, there was public transit every which way. Almo0st everyone used it, and due to its volume, it was even profitable. Due to the increased prevalence of the automobile in this country, that system has all but disappeared. What is left is a system that can't pay for itself, for it isn't used enough. You could argue, with justification, that the increased use by able bodied people of cars has cost those of us who can't use them a safe, simple, and affordable way to get around. Because they deprive those of us who can't drive of our mobility, it seems to me they should pay to restore it. For that too is a damage, and a cost.
By that logic, taxing fuel to cover, at least in part, the operation of a system to give those of us who simply can not drive a car (and while some can't do it for monetary reasons, that isn't all of them) mobility is fair. If you build the system to cover that need, one will find that, in truth, it costs little more to build a system for the benefits of everyone, because increased volume allows for better cost efficiency.
Persuading people who drive large cars into smaller ones is really a side benefit of requiring drivers of motorcars to pay the cost for all of the problems of their existence- roads, enforcement, pollution, and sacrificed mobility for non drivers.