Train is alright as it touches high speeds and gets you in city real quick. That is when your nightmares start. You are immediately surrounded by local vendors and cab drivers who do not speak English and fight with each other to get you in the cab. For me, it got really ugly when a cab driver started to hit and spit on others. I had to literally run into the street and flagged another taxi... Who overcharged me anyways, but at least I did have to worry about wiping a spit off my face. Never will I recommend unless you have arrangement for someone to pick you at station and u really are craving a ride on this train.

I didn't go into the museum but did use the train.
This train is a must if you are arriving at Pudong airport, and want to get into Shanghai quickly - and I mean quickly.
The fare is 50 RMB single, (approx £5) compared with a 4RMB metro fare. The journey takes about 7 minutes and you reach speeds in excess of 300 km/hour. Btw, the metro takes 40 minutes to do the same journey.
If you can afford it use it - you'll have a grin on your face from ear to ear for the rest of the day, oh and do take a picture of the speedo in the carriage - everyone does!

I didn't get a chance to slip into the Maglev Museum but did take the train to the airport. The station is a pain to get to (on the Pudong side of the city) and is the reason ridership is quite sparse - often comprised mainly of tour groups who wish to experience the train ride.

The train departs every 15 minutes during most of the day and will travel at one of two maximum speeds - either 301km or 431km. To experience the top speed you must travel between 9:00am and 10:45am or 3:00pm or 3:45pm. The train holds the top speed for only a minute or so - don't blink!