The electric vehicle (EV) market is becoming much more competitive. Once dominated by Tesla, long-standing car companies like Ford, GM, Mercedes, and Volkswagen are committing serious resources to be major players in this market. However, one of the startup EV companies (Rivian) is posing a credible threat in this industry. Provide a summary usingat least 2 different sources which should come from a variety of perspectives - favorable, critical, and reasonably objective