A proof of concept for a new mall design. The Bento Bus uses a stack of 3-wide belts to feed components into storage boxes, which then feed out to assemblers. The boxes are set to hold no components so as not to take in unneeded materials; when a product is desired, simply add filters for the necessary inputs and the final product to the top box. Since the assemblers are fed from boxes, they need only one sorter for all of their inputs, leaving one slot free to feed the product back into storage (and potentially logistics distributors). The belts are replenished by increasing the elevation at the feed points by 0.5, thereby allowing the feeds to pass over the belts that would otherwise be in the way.

One limitation is that the boxes can only store a maximum of 24 components using maximally raised boxes, which is not enough for every building in the game. However, the "extra" 16 or so components are only used in 1-2 recipes each - it is trivial to add logistics distributors for such materials, or even make the bus two-sided by running belts over the assemblers.