This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position encodes horsepower (x-axis) and torque (y-axis), while its size and color represent highway MPG and make, respectively. Hovering reveals a tooltip with the make name. The visualization uses d3.csv to load data, d3.scaleLinear for axes and bubble size, d3.scaleOrdinal with d3.interpolateTurbo for coloring, and includes a size legend and interactive mouse events for tooltips.