This example displays six months of car manufacturer sales data as a multi-series 3D bar chart, using the d3-x3d library to render the scene in X3DOM. It loads CSV data via `d3.csv`, parses rows into key-value pairs, and feeds the result into `d3.x3d.chart.barChartMultiSeries()`. The chart updates its display by re-binding the parsed data to the chart holder with `datum()`. The page includes D3 v5, d3-3d, and X3DOM scripts, with axes and bars rendered in a 3D space.