China to re-launch the world's fastest bullet trains

China is re-launching the world's fastest bullet trains, running at 350 kilometers (217 miles) per hour. The trains will service the route from Beijing to Shanghai starting next month, making the 1,250-kilometer (777-mile) journey in just 4 hours, 30 minutes. Other routes are being added, reports AP. China first ran trains at 350 kilometers per hour in August 2008, but cut speeds back to 250-300 kilometers per hour in 2011 following a two-train collision near the city of Wenzhou that killed 40 people and injured 191. China has laid more than 20,000 kilometers (12,400 miles) of high-speed rail, with a target of adding another 10,000 kilometers (6,214 miles) by 2020. China has spent an estimated $360 billion on high-speed rail, building by far the largest network in the world.