This visualization shows the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each bubble colored by manufacturer and sized by fuel efficiency. It uses d3.csv to load the data, then renders an SVG scatterplot with d3.axisBottom and d3.axisLeft. Bubble radius is mapped through a linear scale, while color uses d3.scaleOrdinal with d3.interpolateTurbo. Interactive tooltips appear on mouseover, and a legend encodes MPG values with reference circles and labels.