India, June 8 -- The fastest commuter train in the world, in Shanghai, China, has no wheels; it uses magnetic levitation for a smoother, faster ride. The longest route in the world sits within just one country: Russia. It spans nearly 9,300 km. The world's highest railway station, part of the Qinghai-Tibet railway line built by China, sits more than 4,000 metres above sea level. Tucked amid the Himalayas, one of its stations is so remote, it has no staff at all. The air is so thin, passengers cannot alight. (Read on for more on this). Where else do the railways create a little bit of history every day? Take a tour. The railroad was so pivotal in the US that towns lived and died by its proximity (until the roads took over, hurling themselves...