SEOUL -- Tesla Inc. CEO Elon Musk has suggested the U.S. electric carmaker may be able to mass produce batteries with 50 percent more energy density in three to four years, which could even enable electric airplanes.
SEOUL -- Tesla Inc. CEO Elon Musk has suggested the U.S. electric carmaker may be able to mass produce batteries with 50 percent more energy density in three to four years, which could even enable electric airplanes.