Sadly, the remaining section of concrete grandstand base - the last vestiges of Tamagawa Speedway, located on the banks of the Tama river near Kawasaki in the Tokyo metropolitan area - have been slated for demolition as a sacrifice to flood defences.
Having been under threat for some time, after a full survey and investigation the Ministry Of Land have finally decided that it will have to go. The whole bank of that section of the Tama river will soon receive improved flood defences.
Officially opened in 1936, but in a spot that saw organised two and four wheel competition some years before that,Tamagawa Speedway is seen as one of the cradles of Japanese motorsport. A very fine society has been curating its heritage for many years and lobbying heroically for its preservation, but the flood defences are necessary and the fight has been lost.
I last visited some years ago, and most people seem unaware of the original purpose of the stands and the fact that a motor racing course existed there in the pre-war period.