It is partly due to environmental regulations that they can't bring the diesels over until they get them up to a obsessive compulsive standard, the other issue is Ford is stubborn, clueless, and stubborn. My uncle who worked for Ford for 30 years have debated I don't know how many times about this. He cites the failure back in the 80s of diesels and refuses to understand that people want diesels. This is something the Big Three are going to come in on in about 5-10 years after Honda and Volkswagen introduce their offerings here after they prove the demand exists despite the proof that already exists from the sales of the Diesels offered in small SUVs, the high demand for used Volkswagens, the demand for used Mercedes E-classes, and their 3/4 to ton trucks.