This area chart visualizes the sales of cars in India from 2009 to 2019. The chart combines a black line plot with an orange filled area beneath it, using a smooth basis curve. The visualization is rendered as an SVG and built with D3 v5, using `scaleTime` and `scaleLinear` to map the year and sales data. The code also employs `line` and `area` generators, along with axes created by `axisLeft` and `axisBottom`. The sales data is loaded from a CSV file.