I also think any sudden changes are bad, and people don't like it. However, I am of the mindset that people should be taxed less. Here is why I would think this: The government is filled with corruption and selfish rich people. Does anyone disagree? The government is filled with waste and often spends money where it shouldn't go (ie legislative pork benefiting few people or lawmakers/lawmaker's assets). Anyone disagree here?
So I would therefor think government should be small (Not saying anything about how it protects us), meaning more money is poured into private sectors (and potentially more jobs). There is a limited amount of money to go around. If the government owns it all through taxes and puts it back "into the economy", that is socialistic. America was meant to be taxed minimally, and give more people the ability to become well-off. There was a reason they threw all that tea into the sea (nothing to do with the tea party, just history).
I also think having state of the art technology (60MPG, etc) is awesome, but frankly, that technology doesn't exist in any practical terms. If it does, the vehicles are mostly electric, and very expensive. And long distances, they use just as much gas as any other car. There are not many places to charge up at in the world of today with electric cars, and it would have to be often. You have to think on both ends. Using less fuel is good because it decreases reliance on it, but technology is not quite mature for such a thing. And to tax someone in expectation that technology will mature isn't good either, because if it doesn't mature fast enough, then you are charging people 8$ gas and they are still using very cheap gas guzzlers because they can't afford electric or they travel long distances and need gas. Now they are being charged out the booty because someone thought it would be a good idea. Taxing someone because you don't like how they do something is never the answer. It ends up hurting those who do not do well to begin with financially. You get more poor on the streets, less jobs, and a big cycle that can hurt far more than it ever would help. Additionally, you cannot just enact a law you think is good or sounds good, you MUST do studies about it. Its effects can hurt in the long run. That is America's problem today. The laws come out and no one knows its full potential until they repeal it years down the road when it is too late.