The Nio logo is seen at the NIO booth in the National Exhibition Center in Shanghai, China, on April 28, 2025, during the Shanghai Automobile Show 2025. (Photo by Ying Tang/NurPhoto via Getty Images)Shares of Chinese electric carmaker Nio surged after the company unveiled one of its most affordable vehicles yet, underscoring the fierce price war in the domestic market.Nio's U.S.-listed shares rallied, climbing 9.27% to close at $5.54 on Thursday. In Hong Kong, shares rose as much as 10% in Friday morning tr ...