This visualization displays a hierarchical tree of muscle car models grouped by manufacturer, using a JSON data source to define the branching structure. Built with D3 v3’s `d3.layout.tree`, it renders nodes as colored rectangles with text labels and connects them with directional links. The visualization supports mouse interactions, including click-to-expand/collapse and zoom-and-drag via `d3.behavior.zoom`, while CSS styles control node colors and link appearance.