This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across various car makes. Each circle represents a car brand, positioned by its horsepower and torque values, with bubble size encoding highway MPG and color distinguishing the manufacturer. The visualization uses D3.js v7 with SVG rendering, featuring interactive tooltips on mouseover that display the make name. The chart also includes a legend for both bubble sizes and color categories, built with d3.scaleLinear and d3.scaleOrdinal APIs.