This visualization compares average horsepower, torque, and highway MPG across car makes using a bubble chart. Each bubble’s position encodes horsepower and torque on the x- and y-axes, while its radius represents highway MPG and its color distinguishes the car brand. Built with D3 v7, the chart uses `d3.scaleLinear` for axes and bubble sizing, `d3.scaleOrdinal` for categorical colors, and SVG circles with mouseover tooltips. A legend displays MPG values and makes, with data loaded from a CSV file.