This bubble chart visualizes the relationship between average horsepower, torque, and highway MPG across various car makes. The x-axis shows horsepower, the y-axis torque, and bubble size encodes highway MPG, with colors representing different manufacturers. Built with d3.v7, it uses scaleLinear for axes and bubble sizing, scaleOrdinal with interpolateTurbo for color mapping, and includes interactive tooltips via mouseover events. A legend displays the bubble size scale and color categories. Data comes from the included bubblechart.csv file.