This bubble chart displays the correlation between average horsepower, torque, and highway MPG for various car makes, using bubble size to represent fuel efficiency and color to distinguish manufacturers. It uses D3.js (v7) with SVG rendering and enables interactive exploration through hover tooltips. The chart employs `d3.scaleLinear` for axes and bubble scaling, `d3.scaleOrdinal` for color mapping, and D3's `.join()` operator for element creation. Data is loaded from a CSV file, and the visualization includes a legend for both bubble size and categorical color coding.