(CNN) — At 186 miles per hour, the landscape starts to blur. A mile disappears every 20 seconds. An entire town can blink by in the time it takes to remember its name. High-speed trains are, as the ...

China is racing to build a new kind of train that does not just rival jetliners, it threatens to redefine what “high speed” even means on land. Engineers are now testing a magnetic levitation system ...