This interactive bubble chart displays the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each bubble’s position mapping to the first two variables and its size encoding MPG. The visualization uses d3.v7’s `scaleLinear`, `axisBottom`, and `axisLeft` to construct axes, while an ordinal color scale differentiates makes. Hovering reveals a tooltip with the car make, and a legend explains bubble sizing. Data is loaded from a CSV, and the chart is rendered as inline SVG with animated transitions in the tooltip’s opacity.