This area chart visualizes sales of cars in India from 2009 to 2019, with a smooth curve showing tax values over time and a filled orange region beneath the line. Built with D3 v5, the visualization uses `d3.scaleTime` and `d3.scaleLinear` for axes, while `d3.line` and `d3.area` generators with `curveBasis` create the smoothed path and fill. Data is loaded from a CSV file and rendered as SVG, with gridlines and labeled axes for year and tax amounts.