This visualization shows the sales of cars in India from 2009 to 2019 using a combined line and area chart. The black line traces the sales trend over time, while the orange area beneath it emphasizes the magnitude of sales. The chart uses D3 v5’s `scaleTime` and `scaleLinear` for the axes, with `line` and `area` generators applying a basis curve to smooth the data. Data is loaded from a CSV file, and sales values are parsed as numbers while years are formatted as dates.