A bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. The chart uses a linear scale for the x-axis (horsepower) and y-axis (torque), with circle radius and color encoding highway MPG and make, respectively. Built with D3.js v7, it renders as an SVG with an animated tooltip on mouseover. An interactive legend displays MPG values and car makes, while the chart reads data from a CSV file.