This bubble chart visualizes the relationship between average horsepower, torque, and highway MPG across car makes. Each circle’s position encodes horsepower (x-axis) and torque (y-axis), while its radius and color represent highway MPG and make, respectively. Hovering a bubble reveals its make via a tooltip. The chart is rendered as an SVG with d3.csv loading, d3.scaleLinear for axes and sizing, d3.scaleOrdinal for colors, and d3.interpolateTurbo for the color palette, including a legend and hover animations.