This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position encodes horsepower and torque, while its radius and color represent highway MPG and make identity, respectively. Built with D3 v7, the SVG chart includes interactive tooltips on mouseover and legends for bubble size and color categories. Data is loaded from an external CSV file, with axes, scales, and tooltip transitions defined using D3’s selection and scale APIs.