Check out the Magnetic Levitation train that I took a ride on last week in China. It travels from the outskirts of Shanghai (a city of 25 million) to the Pudong airport, covering 30kms in approx 7 minutes. Keep an eye on the speed readout- up to around 430 km/hr. The fastest train in the world & they claim it’s the only maglev currently operating. My hand held video is a little unstable though, as it was disconcerting not wearing a seatbelt at that speed. I did two 30 kms sections, ie. from the city to the airport & back.
For more info on the maglev, click HERE
The track is supported on towers every 25 metres.