Auto and Truck Fuel Economy - From the US Department of Energy and the Environmental Protection Agency -- Gas mileage estimates for all passenger cars and light trucks sold in the U.S., including greenhouse gas emissions estimates. LNG&CNG - A site dedicated to liquefied natural gas and compressed natural gas. Highlightes the economic and environmental benefits of using natural gas as an alternative to diesel in the transport sector. Green Guide to Cars and Trucks - Ranks cars and trucks according to environmental friendliness. Using this consumer guide, buyers can compare cars, vans, pickups, and sport utility vehicles by their environmental impacts, including air pollution, global warming, and fuel efficiency. Heavy-Duty Highway Engines - US federal and California truck and bus emissions standards. Consumer information, emission regulations. AllPar Auto Editorials - Essays on topics such as minitrucks and SUVs and other issues relevant to drivers who do not believe our natural resources are endless. CAFE Standards - An overview of fuel economy (CAFE) standards for automobiles and light trucks, their effectiveness, and related legislative history. New Jesus Campaign Targets SUVs - [CNN] Story about how the church and state are getting involved in the gas-guzzling SUV debate. Get Nitrogen Institute - A nonprofit organization formed to provide consumers, over-the-road truckers, and fleet managers about the benefits of using nitrogen in their vehicles' tires. Cars and Global Warming - A guide to cleaner motor vehicle production, use, and disposal from the Environmental Defense Fund. Features an overview of the assembly process and life cycle of autos. Links to related EDF documents. Clean Cities - Sponsored by the US Department of Energy to support public and private partnerships that deploy alternative fuel vehicles and build supporting infrastructure. Includes how to get started, success stories, resources, and upcoming events.