The Greenest Green Cars

With gas prices on the rise, even die hard gear-heads are considering going green, but there's a lot more to green cars than just the Prius. Cars powered by natural gas, hydrogen fuel cells, and even diesel can be just a green if not greener than a hybrid or electric car. And let us not forget there's more to being green than just gas mileage. Automobile manufacturing, cost of transport, and plenty of other factors weigh in on whether or not vehicles are actually green. Ideally, the cars on this list will save you money *and* lower your impact on the environment. Just try to not be so smug about it at the fuel pump. ;)