Is this the same truck - https://www.ebay.com/itm/266922930789?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=YDfFEpU4QxK&sssrc=4429486&ssuid=H4tBehQaTby&var=&widget_ver=artemis&media=COPY
Look. This is a forum, I am not arguing - simply stating an opinion. My response is more rhetorical than argumentative. Analogy appreciated.
Sandy Munro a while back pointed out space for additional batteries. This extender, if DIY, is an interesting concept that someone may use on as needed...
This range extender thing seems like a downgrade all around, and it costs $15k. The only reasonable use case is if you take this truck camping. So you use it a handful of times per year - But even, it is so stupid.