This bubble chart visualizes the relationship between average horsepower, torque, and highway MPG across different car makes. Each circle’s position encodes horsepower and torque on the x- and y-axes, while its radius and color represent highway MPG and manufacturer, respectively. The visualization uses D3.js (v7) with SVG rendering and includes interactive tooltips on hover, along with a legend showing MPG scale and color-coded makes. Data is loaded from a CSV file, and the chart animates transitions when the tooltip appears or moves.