I found the factor that triggers a long queue line and congestion is on the configuration of the food boxes.
The centre point which is the final destination of chosen ingredients represents tortilla. The grasshopper algorithm calculates the distance between the food boxes and the tortilla. I expect the micro movement would be more efficient since the sum of these distances gets lower.
Finally, the shape transformation from straight arrangement into the circular one, the yellow box shows that it is getting shorter and shorter.
This is the main module of the food machine that integrates with the upright-piano mechanism.
The drawing explains how the input (hitting the keyboard) triggers the food comes out (output) to the food tray. Each part is smoothly interjoined so that the input makes the system activate automatically.
Once you push the keyboard, the hammer connected to the keyboard hits the string and the food box at the same time.
So the food box will lean to the slide towards to the tortilla.
This centerised shape will shorten the time of mixing ingredients. Unlike the square shape of food trailer, people wouldn’t feel they’re waiting because the shape of circle makes energy in the space.
Unfolded Process Drawing
I expect the proposed food machine would solve the problem of congestion on the street. The expected circular flow would would give energy on the street scene.
"The problem of traffic congestion is one of perception....As long as they keep moving they will not be bored or frustrated." -Aranda, L., Aranda, B., Lasch, C., Balmond, C., Kwinter, S., Ar, B. and a, C.L. (2007) Tooling (pamphlet architecture series #27). New York: Princeton Architectural Press.