This sort of technology would be significant if widely adopted.
It makes more sense to focus our money on slower speed trains that are still fast enough and use much less energy.
Maglevs that went smoothly at 62mph (100km) would be a big improvement.
Medium speed maglev trains are also a thing: https://crrczelc-europe.com/medium-low-speed-maglev-changsha...
Where do you get maglevs ant low speed are less efficient? They are frictionless. Of course, I don’t even care if they are. You know what they’re more efficient than? Cars!
Building medium-speed and high-speed maglevs are part of the solution to getting people out of cars.
They are building them in China. Let’s see how far they get.
China built almost 30,000 miles of HSR before the US finished any.
Maybe maglevs will turn out to be one of those things that just doesn’t work in America but works everywhere else.