A force-directed network graph reveals the hierarchical relationships among car types, transmission styles, and door counts using data from a CSV file. The visualization builds nodes for transmission types (Automatic, Semi-Automatic, Manual) and their associated door variations, linking them in a tree-like structure. Using d3.forceSimulation with forceLink, forceManyBody, and forceCenter, the SVG elements (circles, lines, and text labels) update positions on each tick. Nodes are color-coded by category—red for the root, steelblue for transmissions, and orange for door counts—and are interactive through d3.drag.