This bubble chart shows the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position encodes horsepower and torque, while its radius represents highway MPG and its color distinguishes the manufacturer. The visualization uses d3.scaleLinear axes, d3.scaleOrdinal color mapping, and interactive tooltips triggered by mouseover events. A legend displays both bubble-size scaling and make-specific color identifiers. The data is loaded from a CSV file and rendered as SVG elements with D3 v7.