There have been rumors floating around about Rivian looking for a 2nd manufacturing location. We first heard about it on July 22nd. That report had a few details, like they would also (eventually) manufacture 50 GWh of battery cells there, but suggested that a location had not yet been chosen. Then, almost a week later, a new report claimed the company would invest $5 billion in this new location, which is supposedly being called Project Tera. It is rumored that the Arizona Innovation and Technology Corridor in Pinal County -- between Phoenix and Tuscan -- would be the location. It is also suggested it could be east of Mesa, which if it were south east, would put it in that area. Phoenix is more directly east of Mesa (Google map link).