This bubble chart visualizes the correlation between average horsepower, torque, and highway fuel efficiency across various car makes. Each circle’s position maps horsepower and torque, while its radius encodes highway MPG and color distinguishes the brand, with hover tooltips revealing the make. The SVG is built with d3.v7, using d3.scaleLinear for axes and size, d3.scaleOrdinal with interpolateTurbo for colors, and d3.axisBottom/axisLeft. Interactive tooltips appear via mouseover events, and a dual legend explains both MPG size and color categories.