Someone posted an automated warehouse here a couple of months back. This looks like the one:

https://www.youtube.com/watch?v=EeMTZd68fOU

The robots were above the boxes instead of below the shelves (maybe to beat an Amazon patent? I dunno.) But that warehouse looks like nightmare fuel for a maintenance crew.

Fascinating video. Youtube suggested as the next video https://www.youtube.com/watch?v=4DKrcpa8Z_E and that one has at 2:52 what seems to be a maintenance vehicle placed over the same rails as the robots, so that might explain how the maintenance crew can do its job (the one in the video is labeled "Recovery 04", so my guess is that the main purpose of this one is to allow maintenance workers to rescue stuck robots).

Is that the warehouse that burned to the ground? I remember being both sad and laughing at the hubris of building such an inaccessible, complicated warehouse.

https://www.bbc.com/news/technology-47160448

It is! How did I forget that. How do firefighters move through a building with no floors?

> The blaze began high in the warehouse and was so difficult to reach that firefighters had to cut holes in the roof, according to Neil Odin, chief officer at Hampshire Fire and Rescue Service. A sprinkler system only contained the fire in its early stages. It took more than 200 people to quell the flames.

Exactly. Plus I imaging that once they get it down, these things will move even faster and with more precision.