Rivian CEO confirms auxiliary batteries, truck-to-truck charging

Rivian R1T electric pickup conceptThe U.S.-based startup electric automaker Rivian is already showing plenty of signs that it’s doing things differently than Tesla. While Tesla CEO Elon Musk discusses potential features of the company’s new cars on Twitter, Rivian has held back on boasting about some of its most innovative ideas. The latest, according to a wide-ranging new…