Use your car's decoration to demonstrate principles of energy efficiency and heat management in a festive way. Apply decorations that function as passive thermal aids: dark-colored, absorbent fabric "stockings" on the sun-facing side to capture slight warmth, or shiny, reflective Mylar ribbons on another to deflect it. Include a small, safe thermal camera display in the window showing a heat-map of your car's surface. This scientific approach turns your vehicle into a demonstration of...