VW's $5.8 billion investment in Rivian isn't guaranteed. Here are the milestones the EV maker needs to hit

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 Rivian up nearly 20% in early Wednesday trading.The joint venture will provide VW with next-generation electrical architecture and software for EVs across the German automaker's brands, while giving Rivian a ...