Sitting congressman Massie also has a few videos on YT about buying a wrecked Model S to scavenge its battery to power his house. Not quite the same as it's just one big battery, but cool idea nonetheless.

They are rather short and show the setup more than the construction and nitty gritty, IIRC

Where can I get one? I have seen that the Chinese manufacturers who made the scooters for Bird, etc. have been taking advantage of the discarded units by selling conversion kits to turn them into normal eScooters.