On Thrust Angle in vehicle

Most of the passenger's car drivers does not have an experience to drive an automobile adjusted with "Zero Thrust Angle Wheel Alignment" including myself what I had been over 10 years ago, simply because most of the ordinary car had not been adjusted the angle value exactly at Zero Degree except some unreasonably expensive ones like PORSCHE or FERRARI with small productions.
The results of conformity between the human 6th sense of center and that of the vehicle driven by the driver is not perceived actually because of no experience.
One of an European Motor Vehicle Safety Standard specifies the discrepancy tolerance value should be set between plus 10 minutes and minus 10 minutes, so the Thrust Angle of new cars are so adjusted on the factory construction lines before putting in the show rooms to meet with the standard specified by the regulation. On the other hand, is there any specification on Thrust Angle Value in our country Japan? The answer is "Not!" as we know, we do not have such an critically and indispensably important inspection item both in Road Traffic Act and in Road Trucking Vehicle Act. Though following descriptions below are based on my own imagination, this strange phenomena might be caused by some adhesion between government's contemplation and vehicle manufactures who want cost reduction or just a negligence by someone else? I had an opportunity 3 years ago to peep into an internal confidential document in VW AG Japan, by the way, the specification on the thrust angle tolerance had been remade into plus minus 20 minutes in spite of the value is done at 10 minutes in Europe? Why 20 minutes only for export to Japan? Do we Japanese Nation are looked down on by Germans because of Asian Yellow Nation? Why do VW company makes little of us so much, on of an important Ally of former WW2 in far East Orient? If I interpreted in good reasons, relatively slow traffic as we have that never exceeds 100 km/h, discrepancy between 20 minutes might be enough and Japanese Government also have the same perception?