This example visualizes car sales in India from 2009 to 2019 using a combined line and area chart. The line traces the sales trend over time, while the orange area beneath it emphasizes the magnitude. The chart uses D3 v5 with `scaleTime` and `scaleLinear` for axes, `axisBottom` and `axisLeft` for ticks, and `line` and `area` generators with `curveBasis` for smoothing. Data is loaded from a CSV file and parsed with `d3.timeParse`.