Japan was the first country to go for a high speed rail network which is arguably still the best in the world but they’re not resting on their laurels.
The Mag Lev has been tested for a while now and is the future of rail travel (without the rails of course).

I hope that the powerhouse nations look at installing this system rather than wasting time on traditional trains but I suspect the cheaper option will always get the green light.

Further reading:

Toyko station under construction

Science Alert article