This bar chart shows the top 10 car models by unit sales, with each bar's length proportionally scaled to the number of units sold. The visualization uses React and D3 v5, with the `csv` function fetching data from a GitHub-hosted CSV file and `scaleBand` and `scaleLinear` mapping the categorical car names and numeric unit counts to pixel coordinates. The SVG rendering draws blue rectangle bars, axis ticks, and labels, while the `max` function determines the x-axis domain. The page title "Top car sales" frames the chart for the viewer.