I wonder if maglev trains are a good solution to reduce the production of all the dust, lubrication, etc that comes from a wheels-on-rail sort of train. You don’t have spining wheels with bearings all exposed to the outside. Rather than using maglev for high speed, we could use it for its reduced environmental impact. Obviously it would be a lot more resource intensive to make each mile of track, but once it’s established and matured as a technology it could be much lower maintenance. Also the noise pollution would be much less.