German car maker VW to invest up to $5bn in Tesla rival Rivian BBC.comRivian secures up to $5 billion from Volkswagen, shares soar more than 50% CNBCWhat are these hidden vehicles in Rivian’s shareholder letter? ElectrekRivian stock soars as Volkswagen agrees to invest up to $5 Billion in new joint venture Yahoo FinanceVolkswagen to invest $5 billion into Rivian Fortune