Visitors look at China’s homegrown bullet train, the CRH380A, the train that set an operating speed record of 302 miles per hour during a test run on the Beijing-Shanghai line last week, on display outside the venue for the 7th World Congress on High Speed Rail in Beijing December 8, 2010. China now leads the world with 4,680 miles of high-speed rail network, and thousands of miles of new high-speed railways are under construction nationwide.