Can you cook food in aluminum using a hot car engine, and how?
Years ago I read something by a woman that said she and her family used to go on outings in the car, and that they would cook food on the way using the heat of the car's engine. I think she mentioned wrapping the food (meat, veg, etc.) in aluminum foil
I use to drive a school bus in Southern California. Before I left on my mid-day run, I would lay a double wrapped (foil) burrito in the valley between the intake manifold and the head of my bus engine and go do my run.
When I got back
How does a Car 
An interesting explanation of how a car engine works and helps the car move forward.