This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each bubble colored by make and sized by MPG. It uses d3.csv to load data, d3.scaleLinear for axes and bubble sizing, and d3.scaleOrdinal with interpolateTurbo for color mapping. Interactive tooltips appear on mouseover, while a legend shows bubble size values and a color key for each make. The SVG rendering includes animated hover effects via the style property and d3 transitions.