This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position maps horsepower on the x-axis and torque on the y-axis, while its radius encodes highway MPG and its color distinguishes the make. Built with D3 v7, it uses `d3.scaleLinear` for axes and size, `d3.scaleOrdinal` with `d3.interpolateTurbo` for colors, and includes interactive mouseover tooltips plus a size legend. The data comes from `bubblechart.csv`, rendered as SVG with animation.