A scatterplot shows the relationship between fuel efficiency and horsepower for a set of cars, with each point colored by car type. Built with D3 v6, the visualization uses `d3.csv` to load the data, `d3.scaleLinear` for the x- and y-axes, and `d3.scaleOrdinal` with a Tableau and Set3 color scheme to distinguish categories. Hovering reveals a tooltip with the model, type, and values. A legend and axis labels are drawn via SVG, with all marks rendered as `circle` elements.