comments It already has the world's largest high-speed rail network. So it's perhaps unsurprising that China's ambitious plans to create the -- A tester track, which is expected to be completed by 2019, is currently being built alongside a portion of the Beijing-Shenyang high-speed railway. -- energy than the country's bullet trains that are currently in use. Federal Transport Minister Darren Chester said that Chinese high-speed rail was 'staggering' Federal Transport Minister Darren Chester said that Chinese high-speed rail was 'staggering' -- 'We will apply new materials in the research and production of the future high-speed trains, such as carbon fiber and aluminum alloy, which will help reduce weight and enhance energy efficiency,' said senior engineer Qiao Feng on Wednesday. China has the world's longest high-speed rail network with over 11,800 miles of track, reported the People's Daily Online. The network is expected to expand to 18,000 miles by 2020.