This example visualizes the relationship between horsepower, acceleration, weight, and model year for a dataset of automobiles. The scatterplot positions each car by its acceleration on the x-axis and horsepower on the y-axis, with the radius of each point encoding the vehicle’s model year and the opacity and color reflecting weight. The visualization uses D3 v5 to load the CSV data, apply linear scales, and render the SVG circles. It also includes axis labels and tick marks, with the color of each circle computed using a d3 color constructor.