This bubble chart illustrates the correlation between average horsepower, torque, and highway MPG for various vehicle makes. Each circle’s position encodes horsepower on the x-axis and torque on the y-axis, while its radius represents highway MPG and its color distinguishes the make. Built with D3.js v7, the visualization uses `d3.csv` to load data, `d3.scaleLinear` for axes and size, and `d3.scaleOrdinal` with `d3.interpolateTurbo` for color. Interactive tooltips respond to mouse events, and SVG legends display both size and categorical color meanings.