This D3.js bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. Each circle’s x-position maps to horsepower, y-position to torque, and radius to highway MPG, while color encodes the car manufacturer using `d3.interpolateTurbo`. The chart features interactive tooltips on hover and includes a legend for bubble size and color. Data is loaded from a local CSV using `d3.csv`, with axes and scales built via `d3.scaleLinear` and `d3.axisBottom`/`d3.axisLeft`.