Last time I was in Shanghai it ran about 450kmh in the afternoon & 300kmh other times of the day.. I guess it was to do with power use or noise. 

This train runs on the existing HSR tracks, Maglev requires special rail. The China HSR system is excellent, I travelled on it last week & on the Maglev 4 times over the last few years... Both make the rest of the world's railways look to be way outdated.

Absolutely!  China can provide the full package quickly, efficiently & for way less cost. Unfortunately politics wont allow it..at our cost.