https://www.reuters.com/article/us-gm-ceo/gm-challenges-tesla-with-promise-of-profitable-electric-cars-idUSKBN1DF272 >General Motors Co plans to launch a new family of electric vehicles in 2021 that will cost less to build and make a profit for the U.S. No. 1 automaker, Chief Executive Mary Barra told investors on Wednesday.