Group 1 - The 2018 Los Angeles Auto Show marked the public debut of Rivian Automotive, Inc.'s R1T pickup and R1S SUV, highlighting the company's entry into the electric vehicle market [1] - The event attracted numerous analysts and journalists, indicating significant industry interest in Rivian's offerings [1] Group 2 - The author of the article is a journalist with extensive experience in the automotive industry, having contributed to major publications such as The Wall Street Journal and Bloomberg [1]