This pie chart displays 2022 US auto sales by brand, showing each company’s market share as a percentage and sales volume in thousands. Built with D3 v5, it loads CSV data from a GitHub gist and uses `d3.pie` and `d3.arc` to generate SVG paths, with `d3.scaleOrdinal` assigning colors to each segment. The visualization renders a legend with color swatches, brand names, percentage values, and sales figures, all formatted using `d3.format`.