This line chart shows car sales by year from 2013 to 2021, with the years on the x-axis and total sales on the y-axis. The SVG rendering uses D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` generator with data loaded via `csv` from a GitHub gist. The chart includes gridlines from tick marks, rotated axis labels, and a red path for the trend line.