This stacked bar chart uses Chart.js to compare the proportional contributions of horsepower, torque, and highway MPG across 31 car makes. Each bar is segmented into three colored sections using the `stack: 'Stack 0'` property, with values calculated as percentages of each car’s total attribute sum. The canvas-rendered visualization includes tooltips that display the exact percentage per segment, and axes are labeled “Percentage” and “Car Make” for clarity.