CHICAGO, Feb. 11, 2016 (Xinhua) -- A 2016 BMW i8 electric car is on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- Lexus luxury cars are on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- Volvo cars are on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- Lexus luxury cars are on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- A man looks at the interior design of the 2017 Audi R8 V10 Plus supercar during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- Audi luxury cars are on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)

CHICAGO, Feb. 11, 2016 (Xinhua) -- Mercedes Benz Luxury cars are on display during Chicago Auto Show at McCormic Place in Chicago, Illinois, United States on Feb, 11, 2016. (Xinhua/Ting Shen)