This area chart displays car sales from 2001 to 2010. The visualization uses a smooth, curved area to represent the sales trend over time, with axes for year and sales count. The chart is rendered as SVG using D3 v5 and leverages the `area` and `curveBasis` APIs to create the filled shape, along with `scaleTime` and `scaleLinear` for axis scaling. Data is loaded from a CSV file containing year and sales values.