This bubble chart visualizes the correlation between average torque, horsepower, and highway MPG across 31 car makes, with circle position encoding horsepower and torque, circle size encoding highway MPG, and color encoding make. The visualization uses d3.v7 to load CSV data, create linear scales, and render SVG circles with tooltips. A legend shows the circle-size scale and color key, and the SVG supports hover interactions that display the car make. The chart employs d3.scaleLinear, d3.scaleOrdinal, and d3.interpolateTurbo for visual encoding.