This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position encodes horsepower (x-axis) and torque (y-axis), while its radius and color represent highway MPG and car make, respectively. The visualization uses d3.scaleLinear for axes and bubble sizing, d3.scaleOrdinal with d3.interpolateTurbo for color, plus a tooltip for interactivity. Data comes from the included bubblechart.csv file, rendered as SVG elements with hover animations for exploration.