Haven't been to ICN but been on the PVG Maglev a few times. I wouldn't call the PVG Maglev anything a curiosity in the current stage. At the end of the line is a fairly new building. In order to extend the line the government will have to buy out everybody and tear the building down. Even Subway Line 2 is just next door, one would have to stick your arm in the ticket window with ten other people and hope to get a ticket. Whatever time I saved being on the Maglev I wasted on the street trying to flag down a taxi with local ladies just one step ahead of me.

Even that, I still prefer the trains than being on the highway traveling 100kph behind flatbed truck loads of construction material with no strap-down.