This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. The x-axis represents average horsepower, the y-axis shows average torque, while bubble size encodes highway MPG and color distinguishes each manufacturer. Built with D3 v7, the visualization uses SVG rendering with `d3.scaleLinear` for axes and bubble sizing, `d3.scaleOrdinal` for color mapping, and `d3.interpolateTurbo` for the color palette. Interactive tooltips appear on hover, and a legend explains the bubble size scale for MPG values.