There has been a nationwide push to drive more eco-friendly cars, and now as gas prices continue to increase, the emphasis is even greater. While many people are trying to go green behind the wheel, some cities have been doing a better job than others, and Cars.com recently revealed which are the best.

At the top of the list was San Francisco, which probably won't surprise many people. California is often seen as one of the more progressive states in the country, and it looks like Cars.com's figures back up the assumption, at least when it comes to buying an eco-friendly vehicle.

"There's a perception that Californians are more eco-conscious, and our car shopping data shows that's true," said Cars.com editor-in-chief Patrick Olsen. "With more charging stations than any other state and dedicated car-pool lanes, it's easy to understand why manufacturers typically choose California as the place to launch their new 'green' vehicles."

Although San Francisco and five other California towns made it into the top 10, the Golden State is not the only place where going green has become especially popular. At the number two spot was Madison, Wisconsin, and Portland, Oregon, came in at number four.

Even if you don't live in one of the top cities for green cars, that doesn't mean you still can't save gas. If you're looking for fuel-efficient used cars in New Jersey, you should head to New Jersey State Auto Auction, which offers a wide variety of makes and models. Whether you're looking to downsize to a compact vehicle or want to get behind the wheel of an SUV, there's something for everyone.