This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each circle’s size encoding MPG and color distinguishing the brand. Hovering reveals the make via a tooltip. Built with d3.v7, it uses d3.csv to load data, d3.scaleLinear for axes and bubble radius, and d3.scaleOrdinal with d3.interpolateTurbo for color mapping. The SVG also includes a custom legend for MPG values and brand color swatches, with mouseover, mousemove, and mouseleave events driving the tooltip interactions.