Well alot of other states have adopted the CARB standards so that's why they dont sell alot of it. Diesel is still available for the 3/4 ton pick up trucks but because of the new diesel fuel mandated for 2007 in the US certain models will lose their diesel option.

DC will wait for the bluetec diesel engine to be available in the Liberty 2008 before coming out with it in other models. Engine makers are trying to meet the new requirements for low sulfur diesel fuel known as S15(ULSD) which requires that the fuel only have 15ppm of sulfur from the previous 500ppm and 5000ppm. Because of the low sulfur in the fuel automakers need to redesign fuel systems for diesel vehicles and petroleum companies need to put additives in the fuel to help with lubricity and inhibit corrosion and make changes to their refineries.

Cali does allow private parties to own diesel vehicles I see enough where I live.