The Fastest trains in Japan

 https://www.youtube.com/watch?v=XjwF-STGtfE 

The Fastest Train Ever Built: The SCMaglev https://www.youtube.com/watch?v=-MmcQKE12Hg

Inside Japan's Most Expensive Bullet Train https://www.youtube.com/watch?v=icwENiwT1zI

Why This Train Is The Envy Of The World: The Shinkansen Story https://www.youtube.com/watch?v=T3LLgzO_PrI

Evolution of Shinkansen Trains https://www.youtube.com/watch?v=UIcC-m_cgE4

World’s Busiest Station: Shinjuku Station Tokyo https://www.youtube.com/watch?v=EOmskE5uTm4

https://www.greenbiz.com/article/covid-19-could-accelerate-global-shift-planes-trains

For Japan, inter-island trains will become even more popular than planes.

https://www.japan.travel/en/plan/getting-around/domestic-air-travel 

However, trains don't go everywhere so people will still require air and aquatic modes of travel.

https://www.japan.travel/en/guide/island-hopping

International and especially intercontinental air travel will still be a necessity, albeit gradually reduced.

https://www.japanstation.com/domestic-and-international-air-travel-in-japan

https://www.theguardian.com/environment/2021/jul/14/trains-far-greener-but-much-more-costly-than-planes-analysis-finds