Workers assemble second-generation R1 vehicles at electric auto maker Rivian’s manufacturing facility in Normal, Illinois, U.S. June 21, 2024.  Joel Angel Juarez | Reuters DETROIT — Volkswagen Group increased its planned investment for a joint venture with electric vehicle startup Rivian Automotive to $5.8 billion as the companies have broader aspirations than they initially announced for the team-up. Investors were impressed with the details of the deal, sending shares of