Germany is not the United States. Everyone pointing at Europe seems to miss one large difference: there's a whole hell of a lot more room between people and places they need to go in most the United States than in Europe. If you live in Massachusetts, half an hour is a "long drive," but if you live in North Carolina it can easily be how far away Charlotte or Raleigh or Greensboro is. If I want to visit an area with a lot of large shops and restaurants, I'm looking at a 30-mile drive at a minimum; 40 miles if I want to go somewhere that actually has American corporate icons like Barnes & Noble, Starbucks, Best Buy, etc. Taxing fuel at such an astronomical rate will certainly lower the amount of fuel use, but how many businesses will have to shut down because customers can't afford to blow $14 on fuel that they weren't spending before just to patronize those businesses? How much will the cost of items on eBay, Amazon, and other e-commerce sites increase? Someone who lives 30 miles from work because they can't afford housing any closer than that could be paying an extra $70 or more a week in fuel costs just to get to and from their jobs. The worst part is that people who would be considered "poor" are the hardest hit by this sort of feel-good taxation. In a country with a dismal record of low economic upward mobility, the last thing we need is to punch everyone in the financial face while they're already struggling to move up the ladder at all.
How about the effects of such a tax on, say, diesel fuel for the carriers to bring stuff from west coast ports to this side of the country. None of this deals with the serious problems we have in this country with rampant abuse of tax money. $7 per gallon worth of fuel tax that the corrupt politicians get to freely play around with? No thank you. Perhaps if our election cycles were not so widely spaced out so that we could throw the bums out faster, it'd be different.