This example presents a 3D multi-series bar chart of USA vehicle sales by quarter for major automotive brands in 2021. It uses the d3-x3d library to generate WebGL-based 3D bars within an X3DOM scene, built on React and D3 v5. The code loads CSV data from a gist, parses it into per-manufacturer quarterly values, and binds it to the chart via `d3.x3d.chart.barChartMultiSeries()`. A static background image and custom title style the page.