I was talking to a couple of tech guys from Cat and Cummins. It appears that by October 1st ALL Diesel trucks have to go by emissions just like gasoline engines. They were saying that Diesels were already being outfitted with catalytic converters. Also some hybrids were already running on the street that use diesel fuel to start and then use propane to run. Looks like emissions are all over the place now and it looks like its gonna get worse.