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I can imagine something like TARS:

https://i.imgur.com/tcDKdQ7.gif

Compact and versatile, would be great to have in a warehouse or a lab to give it heavy lifting jobs, or otherwise mundane tasks to do.

The ones I saw were just small carts with sensors to avoid bumping walls.

We have a long way to go but I hope Elon's bots are honest and don't violate Asimov's rules for robots.