A pie chart displays 2022 US auto sales by brand, with each slice sized by year-to-date sales and a legend showing brand names, percentage of total sales, and sales figures in thousands. The visualization loads CSV data from a GitHub gist using `d3.csv` and renders with `d3.pie` and `d3.arc`, applying a fixed color scale via `d3.scaleOrdinal`. Labels are formatted with `d3.format`, and the SVG is generated entirely in the browser.