This pie chart visualizes 2015 US vehicle sales by brand, broken down by YTD sales figures for each manufacturer. The chart uses an SVG rendering with D3 v5’s `pie` and `arc` generators to create segments, while `scaleOrdinal` assigns a distinct color to each brand. Data is loaded asynchronously from a CSV file via `d3.csv`, with sales values formatted in thousands using `d3.format`. A legend on the right lists each brand alongside its corresponding sales total, providing a clear comparison of market share among the eleven included companies.