50 years ago,with the growing economy of Japan,the innovated technology at that time and ground-breaking era of high speed railway system has created,I think that all railroad employee and rolling stock manufacturer all over the world should be grateful for this,because it created the unlimited possibilties for shorting the distance between the metropolitian area and rural one in every country that used railway as their infrastructure and providing the other alternatives,now the new revolution of railway and its effect is still emerging,keep it on SKS!!