On Monday, China started building its first intercity maglev railway, Hunan province's Changsha-Liuyang Maglev Express. The 48.73-kilometer line, with a designed maximum speed of 160 km/h, will link the province's capital city with downtown Liuyang, cutting travel time by half. According to Changsha Metro, the maglev system's advantages allow for a flexible route design, reducing the need for tunnels and …