This bubble chart shows the correlation between average horsepower, torque, and highway MPG for various car makes. Each circle’s position encodes horsepower on the x-axis and torque on the y-axis, while its radius and color represent highway MPG and car brand, respectively. The visualization includes interactive tooltips on hover, a legend for MPG scaling, and a color-coded list of makes. The code uses d3.csv for data loading, d3.scaleLinear for axes and sizing, d3.scaleOrdinal for colors, and SVG with d3 transitions for tooltip animations.