This example visualizes a network of battery electric vehicle (BEV) categories, countries, years, and use types for India and China from 2013 to 2015. It uses a D3.js force-directed graph with `d3.forceSimulation`, `d3.forceLink`, and `d3.forceManyBody` to position nodes and links, rendered as SVG circles and lines. Node colors distinguish categories, years, and countries, while light blue links show connections. The visualization supports interactive dragging via D3’s `drag` behavior, and layout updates continuously through simulation ticks.