This interactive bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes, with bubble size encoding MPG and color distinguishing manufacturers. Built with D3 v7, it renders SVG circles positioned by linear scales, includes tooltips on mouseover, and provides a legend for both bubble size and color. The data comes from a CSV file loaded via d3.csv, with colors assigned using d3.scaleOrdinal and the interpolateTurbo color scheme.