This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each bubble’s position encodes horsepower (x-axis) and torque (y-axis), while its size and color represent highway MPG and the car make, respectively. Built with D3 v7, the SVG chart includes hover tooltips, a legend for bubble size, and color-coded categories. Data is loaded from a CSV file via `d3.csv`, with linear scales for axes and bubble sizing, and an ordinal color scale using `d3.interpolateTurbo`.