beautiful Peterbilt 379 (coga) in the drag racing first against another peterbil, and then against a Corvette and a Ford Mustang GT500, guess who wins?

Wait the second? Have there been any complaints about VW from your country? ;) Well, if VWs were allowed to produce that amount of 'coal', there won't have any NOx problems, which accur with optimized combustion. There's a conflict of goals with the Diesels. You can get pretty clear exhaust gas, no carbon-particulate matter with fine nebulization and lambdas <1,3 but that leads to a too good combustion and therefor to high temperature peaks within the combustion zone and therefor too much NOx. But you can drive with lambda >0,8 as seen here, then there'll be no NOx whatsoever! ;)