Maglev

Maglev trains require expensive infrastructure.

Technology isn't everything, but it impresses me if an ethnic group can put their own space station up or build the fastest maglev trains.

A “moving platform” scheme[…]is more technologically ambitious than maglev trains even though it relies on conventional rails. Local trains would use side-by-side rails to roll alongside intercity trains and allow passengers to switch trains by stepping through docking bays. This set-up solves several problems […]. Stopping high-speed trains wastes energy and time, so why not simply slow them down enough for a moving platform to pull alongside?

After nearly three years of technical research, Ding said the team had developed a lightweight and high-strength train body that lays the technical foundation for the development of five sets of maglev engineering prototypes.

When finished, the trains will be the fastest commercial maglevs developed and built completely by Chinese firms.