The visualization displays a 3D multi-series bar chart comparing quarterly U.S. car sales for the top six manufacturers across four consecutive years, using an X3D scene embedded in the DOM. The chart renders each manufacturer as a cluster of rectangular bars, with height encoding sales volume per quarter. Data is loaded from a remote CSV file via D3’s `csv` function and parsed with a custom row-mapping callback. The example leverages the `d3-x3d` library in conjunction with D3 v5, the `d3-3d` module, and the x3dom runtime to produce interactive, three-dimensional bars.