U.S. authorities carried out a search warrant at an electric vehicle battery plant construction site operated by HL-GA Battery Co., the joint venture between Hyundai Motor Co. and LG Energy Solution Ltd. in Bryan County near Savannah on Thursday. U.S. authorities carried out a search warrant at an electric vehicle battery plant construction site operated by HL-GA Battery Co., the joint venture between Hyundai Motor Co. and LG Energy Solution Ltd. in Bryan County near Savannah on Thursday.