This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each bubble’s position encodes horsepower on the x-axis and torque on the y-axis, while its radius and color represent highway MPG and car make, respectively. Using d3.v7 and SVG, the chart includes interactive tooltips on mouseover, a legend for MPG values, and a color-coded make legend. The data is loaded from a CSV file, and axes, scales, and legends are rendered programmatically with D3’s standard API.