A line chart displays total car sales per year from 2013 to 2021, sourced from a CSV loaded via `d3.csv`. The SVG rendering uses `d3.scaleTime` for the x-axis, `d3.scaleLinear` for the y-axis, and a `d3.line` path generator to draw the trend. Axes are created with `d3.axisBottom` and `d3.axisLeft`, with gridlines and rotated axis labels. The chart highlights sales fluctuations over time in red.