Rivian's business and stock could be heading in different directions.Up-and-coming electric vehicle company Rivian Automotive (RIVN -1.51%) went public in 2021 and has steadily fallen 90% from its peak due to concerns about its long-term financial viability. However, there's been a bit of good news lately; Volkswagen recently announced a joint venture with a $5 billion investment in Rivian.Days later, Rivian's management announced it was reaffirming its full-year production guidance and declared it was on p ...