Recent Rivian response. Of course, I don’t understand why that can provide manual wheel lockers. After hooking up to the RV, just walk around the Rivian and unlock the wheels from the drive line. Reverse procedure when decoupling from RV. Products are made by warn and other companies to do this.This is from a couple of years ago but Rivian did say on Twitter that the R1S and R1T can be flat towed.