Buffett-Backed BYD Doubles Rival NIO's Sales in March By: Motley Fool April 07, 2021 at 11:37 AM EDT Sales of battery-electric vehicles were only a portion of overall new-energy vehicle sales. Read More >> Related Stocks: Berkshire Hathaway Berkshire Hathaway Byd Company Ltd ADR Nio Inc ADR Xpeng Inc ADR