Theory, sketched. You are Nieves, buying a car from Big Jim. Your grove and his are linked: boxes cross, records don't merge.
Theory, not built. Fiction: Nieves, Big Jim and his lot come from Nestor's demos; the link, the prices, the mechanic and every crossing are invented to show the shape. Boxes with a dashed gold edge came from Jim's grove. A seal there is Jim's word, never yours. Nothing here talks to a model or to another grove.