A combined line and area chart visualizes car sales in India from 2009 to 2019, with the area fill in orange and a black line tracing the trend over time. The chart uses D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and the `area` and `line` generators with `curveBasis` smoothing. Data is loaded via `csv` from a GitHub gist, parsed with `timeParse`, and rendered as SVG with styled axes and tick labels.