This visualization shows the distribution of automobiles by body style, with a steelblue area chart displaying car counts across categories like convertible, hatchback, and sedan. The code loads automobile data from a remote CSV file using `d3.csv`, aggregates counts with `d3.rollup`, and renders the chart via SVG using `d3.area` with `scalePoint` for the x-axis and `scaleLinear` for the y-axis. D3 v7 provides the axes and margin-based layout.