> I’d have expected a range extender to be a gas or diesel generator, a bit like the bmw i3, but removable Run don't walk to the patent office with that idea!

> I’d have expected a range extender to be a gas or diesel generator, a bit like the bmw i3, but removable Run don't walk to the patent office with that idea! If Rivian can patentent the idea of an extra battery, your invention seems much more inventive!