A Hyundai FE Fuel Cell car is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)

A Mercedes S500e is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)

A Peugeot Instinct concept car is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)  

A Techrules Ren concept car of Chinese electric-carmaker Techrules is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)

A Honda Clarity car is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)

A BMW i8 is seen on the second press day of the 87th International Motor Show in Geneva, Switzerland, on March 8, 2017. (Xinhua/Xu Jinquan)