Travis Kalanick, co-founder of the transportation network company Uber, speaks at Baidu World Congress or Baidu World Conference in Beijing, capital of China, Sept. 8, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)

Baidu's CEO Robin Li Yanhong (L) shakes hands with Travis Kalanick, co-founder of the transportation network company Uber, at Baidu World Congress or Baidu World Conference in Beijing, capital of China, Sept. 8, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)

Travis Kalanick, co-founder of the transportation network company Uber, interacts with students in a speech at Tsinghua University, Sept. 7, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)

Travis Kalanick, co-founder of the transportation network company Uber, pose for selfie with students in a speech at Tsinghua University, Sept. 7, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)

Travis Kalanick, co-founder of the transportation network company Uber, speaks at Baidu World Congress or Baidu World Conference in Beijing, capital of China, Sept. 8, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)

Baidu's CEO Robin Li Yanhong calls "special driver" Travis Kalanick, co-founder of the transportation network company Uber, in a live demo of Uber app at Baidu World Congress or Baidu World Conference in Beijing, capital of China, Sept. 8, 2015. US ride-hailing service company Uber will extend its service in China from 20 cities now to 100 more over the next year, its Chief Executive Travis Kalanick announced on Tuesday. (Xinhua/Zhu Wei)