This example shows car manufacturer sales across the first six months of the year as an interactive 3D bar chart, with each manufacturer’s monthly values rendered as vertical bars in a three-dimensional scene. The visualization uses D3.js v5 for data loading and scaling, the d3-3d plugin to convert 2D bar coordinates into 3D geometry, and the X3DOM library to render the scene in the browser. Data comes from a CSV file parsed into per-manufacturer monthly series, which are then passed to the `d3.x3d.chart.barChartMultiSeries()` chart component. The chart updates its displayed data after initially loading a random dataset.