A brave Chinese policeman sprinted across a road to stop a driverless bus from crashing into cars in Lixian County, central China. The officer was standing guard during the national college entrance exams when a panicked pedestrian ran to tell him of the runaway vehicle. Video Footage shows the officer racing to reach the bus, which was rolling in reverse toward the Gucheng-Hucheng Road intersection. Once he caught up with it, he hopped into the driver's seat and pulled the emergency brake, prev