This example visualizes 2022 US auto sales by brand as a pie chart, with each slice representing a brand's year-to-date sales and a legend detailing each brand's name, percentage of total sales, and sales volume in thousands. The chart is rendered using D3.js v5, with the `pie` function computing arc data and the `arc` function drawing SVG paths. Data is loaded asynchronously from a CSV file via `d3.csv`. Colors are assigned using `scaleOrdinal`, and legends display computed percentages and formatted sales values.