Trains will have a speed of 200 km/h

Ivan Yefremov : paleontologist, geologist, science fiction author and social thinker
“At last the planned organization of life put an end to the murderous race for higher speeds, the construction of faster and faster vehicles. Trains on the Spiral Way proceed at 200 kilometres an hour. Only on rare occasions do we use aircraft with a speed of thousands of kilometres an hour.”

Novel "Andromeda"