Two self-driving test cars, produce by Changan Automobile Group, are on their way to Beijing, on April 12, 2016. The modified Changan Raeton, which will become the country's first long-distance unmanned vehicle, started the journey on Tuesday from Southwest China's Chongqing. The vehicles will pass through Xi'an, Zhengzhou, and arrive in Beijing on April 17, covering a distance of nearly 2,000 kilometers. [Photo/chinadaily.com.cn]