This bubble chart shows the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position maps horsepower (x-axis) and torque (y-axis), while its radius encodes highway MPG, and color identifies the manufacturer. The visualization uses d3.scaleLinear for axes and bubble size, d3.scaleOrdinal for color, and SVG circles with mouseover tooltips. It includes a legend for MPG circle sizes and a color-coded make legend. Data loads from a CSV via d3.csv.