This bubble chart visualizes the correlation between average horsepower (x-axis), torque (y-axis), and highway MPG (bubble size and color) for 31 car makes. Each circle is positioned by its horsepower and torque values, while its radius encodes highway MPG and its color distinguishes the car brand. Rendered as SVG with animation, the chart uses D3.js v7 APIs including `d3.scaleLinear` for axes and bubble sizing, `d3.scaleOrdinal` for color mapping, and `d3.interpolateTurbo` for the color palette. Interactive tooltips appear on mouseover, displaying the car make. The data comes from a CSV file, with a legend explaining the highway MPG bubble sizes.