This visualization shows the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each bubble’s position encodes horsepower (x-axis) and torque (y-axis), while its radius represents highway MPG and its color distinguishes the manufacturer. The chart uses D3.js v7 to render SVG circles with linear scales for axes and bubble size, plus an ordinal color scale. Interactive tooltips appear on mouseover, and a legend explains the bubble sizing.