This line chart visualizes car sales in India from 2009 to 2019 using a single time-series line. The D3.js v5 code loads a CSV from a GitHub gist, parses dates and numeric sales values, and renders the chart as an SVG. It uses `scaleTime` and `scaleLinear` for axes, `line` for the path generator, and applies custom styling to grid lines, tick labels, and the line itself, which is drawn with a red stroke.