In theory it is possible as it will have a 12 volt battery but I know in the Tesla it is not readily accessible so not something I would venture to do. I would guess that the Rivian 12 volt battery will not be readily accessible either. I also would not want to introduce the chance of sending a surge into the system that could fry something.I am curious to know if electric vehicles particularly my future R1T will have the ability to boost an ice vehicle ?