A hierarchical tree visualization displays muscle car models grouped by manufacturer, with nodes color-coded by depth level. The SVG rendering uses D3 v3’s `d3.layout.tree` to position nodes and links, with a zoom and drag behavior via `d3.behavior.zoom`. Animation transitions node positions over 800 milliseconds on updates, while tooltips and drop-shadow filters enhance interactivity. Data is loaded from a JSON file detailing Ford, Dodge, and their sub-models like Mustang and Charger.