This bubble chart shows the correlation between average horsepower, torque, and highway MPG across different car makes, with each bubble’s size representing fuel efficiency and color encoding the manufacturer. The visualization uses d3.v7 to render SVG circles with linear scales for axes and bubble radius, plus an ordinal color scale. Interactive tooltips appear on mouseover, and a legend displays size and color mappings. The chart reads data from a CSV file and includes animated hover effects via D3 transitions.