The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs. There, in very small air sacs called alveoli, oxygen is brought into the bloodstream and carbon dioxide is pushed from the blood out into the air.
And, just to clarify, the kitty litter in your trunk, to be used for traction, needs to be taken out and spread around your tires. Most cars are front wheel drive, so the extra weight alone in the back ain't gonna do you much good.
Gone are the days of sand and ashes in the cat box. Walk into your local grocery, big box or pet store, and you'll be faced with litters made from a wide variety of materials such as clay, corn, silica gel crystals, recycled paper, wheat hulls, walnut shells, and bark, to name just a few.