This bubble chart shows the relationship between average horsepower, torque, and highway MPG for different car makes, using D3.js. The x-axis represents horsepower, the y-axis represents torque, and the size of each bubble corresponds to highway MPG. The data is loaded from a local CSV file via `d3.csv()` and rendered as SVG circles with tooltips. Color is mapped by car make using `d3.scaleOrdinal` with an `interpolateTurbo` palette, and a legend displays the MPG size scale.