This bubble chart visualizes the relationship between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s x and y position corresponds to horsepower and torque, while its radius encodes highway MPG, and color distinguishes the make. Hovering reveals the make label via a D3 tooltip. Built with d3.v7, it uses SVG rendering with scales for position, size, and ordinal color, and includes legends for size and color mapping. Data comes from the included `bubblechart.csv` file.