This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes using CSV data. Each circle’s position encodes horsepower (x-axis) and torque (y-axis), while its radius and color represent highway MPG, with a color legend identifying brands. Built with d3.v7, it uses d3.scaleLinear for axes and bubble size, d3.scaleOrdinal with interpolateTurbo for colors, and SVG rendering. Interactive hover tooltips display the make name, while a legend shows MPG values and car brand markers.