This pie chart displays 2022 US auto sales by brand, with each slice sized proportionally to year-to-date sales and accompanied by a legend showing brand names, percentage of total sales, and sales volume in thousands. The visualization uses d3.pie and d3.arc to generate SVG paths, with d3.scaleOrdinal assigning categorical colors. Sales data is loaded as CSV from a GitHub gist and processed in JavaScript, while percentages are formatted using d3.format.