https://en.m.wikipedia.org/wiki/Panopticon
Although it is physically impossible for the single guard to observe all the inmates' cells at once, the fact that the inmates cannot know when they are being watched motivates them to act as though they are all being watched at all times.
that's not a world i want to live in...
it's the Mireo Plus B from siemens. it's already in use in the north of germany since march of this year. https://www.nordbahn.de/blog/so-isses/der-norden-begruesst-die-akku-zuege/
there's nothing elon about this train, just that it's driving to his factory.
they are great for short distances that are difficult to electrify.