This area chart displays total US auto sales from 2005 to 2022, with a smooth curve generated via the `d3.area` generator with `curveBasis`. The x-axis uses `d3.scaleTime` for years, while the y-axis uses `d3.scaleLinear` for sales figures, both rendered with SVG axes and gridlines. Data is loaded from a CSV file, and the chart includes axis labels and a title, with styling applied via external CSS. The visualization uses D3 v5 and SVG rendering.