This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. Each bubble's position corresponds to its horsepower and torque values, while its size encodes highway MPG and its color represents the car manufacturer. Built with D3.js (v7), the SVG renders axes, labeled scales, and animated bubbles with hover tooltips showing the make. A legend displays bubble size values and color-coded car brands, using `d3.scaleLinear`, `d3.scaleOrdinal`, and D3's `join` API for data binding.