This interactive bubble chart reveals the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each bubble sized by fuel efficiency and colored by manufacturer. The visualization uses D3.js v7 with SVG rendering and animation, loading data from a CSV file. Hovering over bubbles triggers tooltips showing the car make, while a legend displays MPG values and color-coded makes. The chart employs d3.scaleLinear, d3.scaleOrdinal, and d3.axisBottom/Left to map data dimensions and axes.