A fork of the ICE-8 family tree visualization demonstrates collapsible, hierarchical data exploration using D3 v3's tree layout. It renders an SVG diagram of car origins—with Japanese, German, and American brands branching into specific models—where users can click nodes to expand or collapse children. Node colors differentiate data types (root, brand, model), while animated transitions move elements smoothly between states. The implementation uses `d3.layout.tree`, SVG rects and paths, and CSS-based tooltips, with data loaded from a JSON file.