This interactive bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s x-position represents horsepower, y-position represents torque, and its radius encodes highway MPG, with color distinguishing car brands. Built with D3 v7, the SVG renders animated mouseover tooltips displaying the make. The chart includes axes with labels, a size legend for MPG values, and a color legend, using scales such as `d3.scaleLinear` and `d3.scaleOrdinal` applied to data from `bubblechart.csv`.