Yeah my thought exactly, especially during the 'landing' part where the wheels extend backward and forward. Thats like a couple tons all focus on the that single point between the wheels.
Not to mention that the support frame then has to bend significantly as it is lowered. Right there is a weakness just waiting to snap as those hinges have to support the entire weight of the carriage alone, and not flex or bend out of alignment too.
They didn't really show it either, but that carriage also has to be counterweighted for that swingout. Literally half its size (and the long way too) is on only a few hinges, and is holding up an entire kitchen's worth of weight. And that isn't even considering how the hell that entire half will remain supported and stablized when in transport mode, as it cannot be welded directly to the frame, since the frame itself has to also be able to slide forwards and backwards.
This also implies that the entire carriage is being pulled exclusively by locking pins too, as the frame cannot be directly attached to the carriage's body. I get its going to be pins forged by elves and dwarves in a magical setting, but even still, those pins better be made of diamonds coated in adamantium, because god forbid one of them breaks, gets a bend, or dents mid transit.
And since they are going to be moving on mainly unpaved roads that MC dug, that storage area is still a terrible idea. Sure, the design is slightly better than just an open bookshelf, but that still won't be enough to prevent every loose object or ingredient in those open, slanted bins from bouncing all over the place the moment they hit even a single pothole. They should have at least included a small cargo net to cover each bin with.