This visualization presents 2022 US auto sales by brand as a pie chart, using D3 v5 to load CSV data from a GitHub gist and render SVG sectors. It employs `d3.pie` for arc generation, `d3.arc` for path construction, and `d3.scaleOrdinal` for a custom color palette. A legend lists each brand with its percentage share of total sales and raw sales figures in thousands, formatted via `d3.format`. The chart is centered in an HTML page with a styled title, all code running from a bundled script with async data loading.