This pie chart displays the number of car units sold for various car models, with each slice representing a different car and its corresponding sales figure. The chart uses a categorical color scheme, assigning distinct colors to each car model, and includes a legend on the right side showing the car names alongside their sales values. The visualization is built using D3.js v5, specifically leveraging the `d3.pie` and `d3.arc` functions to generate the pie slices and the `d3.scaleOrdinal` for color mapping. The data is loaded from an external CSV file containing car names and their unit sales. The chart is rendered as an SVG with a fixed width and height, and the legend labels and values are formatted using D3's `format` function for readability.