Rivian recently told investors how it plans to navigate a fine line to profitable growth.2024 has been a year of transition for the electric vehicle (EV) industry. Sales are still growing, but the rate of expanding sales has slowed noticeably. That's led many EV makers to throttle plans to increase production as well as the number of new models being offered.Stocks in the industry have taken a beating as a result. Rivian Automotive (RIVN 6.10%) has thus far been relatively successful in building a customer ...