This bubble chart shows the correlation between average horsepower, torque, and highway MPG across 30 car makes. Each circle’s position encodes torque and horsepower, while its radius reflects highway MPG and its color represents the car manufacturer. The chart includes axes, labels, a size legend, and an interactive tooltip that reveals the make on hover. It uses D3 v7 with SVG rendering, including `d3.csv` for data loading, linear scales for axes and bubble size, an ordinal color scale, and mouse event handlers for tooltip display.