SHANGHAI — The business of making cars has reached a critical juncture — and it looks as if China is in the driver’s seat.General Motors’ surprise announcement on Thursday that it aspires to eliminate gasoline and diesel cars from its fleet by 2035 and embrace electric cars follows a road map successfully drawn by Beijing. To get there, G.M., the Detroit stalwart and symbol of American industrial might, may have no choice but to embrace car and battery technologies in which Chinese companies play leading roles.Even when setting the time frame, G.M. seems to be matching Beijing’s …
