This area chart shows the sales of cars in India from 2009 to 2019. It combines a smooth line and a shaded area under the curve, with a time-scaled x-axis for years and a linear y-axis for sales figures. The visualization uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, `line`, and `area` with `curveBasis` smoothing. Data is loaded from a CSV file hosted on GitHub Gist, and the chart is rendered as an SVG with styled grid lines and axis labels.