China already possesses the world's largest high-speed railway network, and it will only expand more ambitiously, according to the country's new Five-Year Plan. But it's not just the railroads that are extending. China may also get a major boost in the speed of its bullet trains. A prototype maglev train unveiled recently at Southwest Jiaotong University in Chengdu aims to set a new speed record for trains – the current record of 603 kilometers per hour is held by Japan's SCMaglev. China's answer to it is 620.