The G trains will cost a bit more for the convenience. At 82RMB one way for a second-class seat you are looking at a 35RMB increase over the D train.
The 200km distance covered will be sped across at around 300 km/h, reaching a maximum speed of 350 km/h.
Hangzhou is one of Shanghai’s best day-trip locations, with the addition of the new ‘silver bullet’ trains you can expect day-tourism to Hangzhou to increase. Trains leave the Hongqiao Station beginning at 6:12am and returning on the last run at 9:45pm, which would give visitors to the city ample time to see the amazing West Lake, including catching a romantic sunset boat ride out into the center or the lake. The silk factories and lama temples are all eagerly awaiting the influx in tourism from Shanghai.