The article is confusing. I have some doubts that the correct units are being stated. Is the top speed achieved in 5 seconds, or for 5 seconds? If the previous, the article is about rapid acceleration, but most passengers on such a train would be hurt during the rapid acceleration. If it is about maintaining a high speed for 5 seconds, that makes more sense, but then the preposition for instead of in should be used. If this is a scale demonstrator, that would make sense, but then say that the experiment shows that a train 1000 times heavier is feasible and could sustain that speed. You must explain the need for 100 mph per second acceleration which would kill some people is a good thing.
China's experimental maglev vehicle reached 497 mph in 5.3 seconds in a recent trial, setting a new record and coming closer to commercial airline speeds. This follows earlier runs that reached 404 mph in June and 433 mph in July.
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