"Ghosn said the diesel-powered Maxima should get "up to 30% greater" mileage than a similar-size gasoline engine. And because it burns less fuel, it will produce less carbon-dioxide, a greenhouse gas." "Nissan is the second Japanese automaker to announce a diesel car for the U.S. market. Honda said last year that it will sell a diesel car in the U.S. in 2009." http://www.usatoday.com/money/autos/2007-0...an-diesel_N.htm
It's only a matter of time before Toyota follows suit. They already have a wonder Corolla diesel. Honda has the sweet diesel in their Accord (TSX).