Rivian could potentially build a pickup truck version of the R2 SUV, as well as a high-performance R2X, according to Reuters.CEO RJ Scaringe suggested to the publication that the assembly line in Rivian's upcoming Georgia factory is suited to building multiple variants of the R2.Volkswagen has also increased its stake in Rivian, buying up around $1 billion in stocks to increase its share of the company to 15.9 percent.