This interactive bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across multiple car makes. Each circle represents a car model, with its x-position mapped to horsepower, y-position to torque, and bubble size scaled by highway MPG via d3.scaleLinear. The SVG rendering uses d3.axisBottom and d3.axisLeft for axes, while d3.scaleOrdinal assigns colors from d3.interpolateTurbo by make. Mouseover events trigger tooltips, and fixed legend circles indicate MPG size values. Data loads from an external CSV file.