According to Google maps, leaving PVG at 7 am, to get to the New World Radisson, it's 45 minutes by taxi, 59 minutes by Maglev/Subway (if you make the connection) and 1:39 by subway alone (with the change at Guanglan between the 2 extension and the regular 2).
If these times are true, the Touran taxi is looking appealing.

Could it really take 1:39 by subway?