Any category that you're interested in, you can buy green.

The goal is to get more hybrid technology into the marketplace, ... Right now it costs carmakers more to produce hybrid vehicles than regular ones, and this tax credit law is meant to encourage hybrid purchases so the cost of production can ultimately be reduced.

At this stage, battery-powered electrics aren't there yet.

Are you going to make your money back in saved fuel? And the answer to the question is determined by how much you drive and the price of gas.

For example, the Chevrolet Yukon SUV weighs 6,000 pounds, ... [The government's fuel efficiency] standards expect a car of that weight to get about 12 miles to the gallon, but the Yukon gets an estimated 20. Because it exceeds those expectations, it qualifies for a tax credit.