China launches world’s first maglev ‘sky train’ that floats in the air using permanent magnets

China has launched the world’s first suspended maglev line built with permanent magnets that can keep a “sky train" afloat forever, even when it is not being supplied with power. The 800-metre (2,600-foot) experimental Red Rail in southern China’s Xingguo county, Jiangxi province, used powerful magnets rich in rare earth elements to produce a constantly repelling force strong enough to lift a train with 88 passengers in the air.