Vivek Ramaswamy, alongside Elon Musk, will lead a cost-cutting body called DOGE (Department of Government Efficiency).DOGE plans to scrutinize federal loans of about $7.5 billion given to Tesla rivals, Stellantis and Rivian.Concerns arise that Musk may use his position to interfere with his companies' rivals and regulators.Vivek Ramaswamy criticizes a loan given to Stellantis and questions its legitimacy.