Comment There is already one of these in operation (Score 4, Informative) 360
There is already one of these in operation between Beijing and Tianjin, operating at a top-speed of 350 km/h, which is apparently already a record.
http://en.wikipedia.org/wiki/Beijing-Tianjin_high-speed_rail
http://en.wikipedia.org/wiki/Beijing-Tianjin_high-speed_rail