This pie chart visualizes 2022 U.S. auto sales by brand, showing each brand’s market share as a percentage of total year-to-date sales and its corresponding sales volume in thousands. The chart uses d3.pie and d3.arc to generate the segments, with d3.scaleOrdinal assigning colors. Data is loaded from a CSV via d3.csv, and legends display brand names, percentage shares, and sales figures. The chart is rendered as an SVG with d3.select, and text formatting uses d3.format.