The chart displays car sales by type across three years (2019–2021), using three colored lines to compare yearly trends. It shows the sales values per car type on a band scale, with each line labeled at its endpoint. The visualization is built with D3 v7, using `d3.text` to load comma-separated data from a remote text file, then rendering SVG paths via `d3.line` with a monotone curve. Axes, labels, and a title are added using D3’s `axisBottom` and `axisLeft` methods, while the data source is a GitHub gist.