High gas prices, the war in Iraq and concerns about global warming are fueling interest in cars and trucks with alternative powertrains, like gasoline-electric hybrids, clean diesels, ethanol and farther in the future, fuel cells that run on hydrogen.
But if you're a lover of luxury, don't expect too much choice when visiting the showroom. There are relatively few truly eco-friendly options for luxury-brand car and truck shoppers.
Or, rather, "there aren't any," says Jim Motovalli, the editor of E/The Environmental Magazine, and the author of Forward Drive: The Race to Build the Car of the Future. "Luxury cars are too big to be eco-friendly."