 GM CEO and Chairman Mary Barra and LG Chem Vice Chairman and CEO Hak-Cheol Shin at the automakers battery lab in Warren, Mich., where the companies announced a new 2.6-billion joint venture on Dec. 5, 2019. GM DETROIT General Motors and LG Energy Solution have indefinitely shelved plans to build a fourth battery cell ... GM, LG end plans for fourth U.S. battery cell plant as automaker... 