This line chart shows the sales of cars in India from 2009 to 2019, with the x-axis representing time (parsed from date strings using `d3.timeParse`) and the y-axis representing sales volume. The chart uses `d3.scaleTime` and `d3.scaleLinear` for axes, rendered as SVG with `d3.axisBottom` and `d3.axisLeft`, and the line is generated via `d3.line`. Data is loaded from a CSV file using `d3.csv`. Grid lines are styled via CSS classes.