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.
Recycled waste products from the lumber industry are used to make alternative cat litter. A blend of cedar chips and hardwood, for example, is lighter than clay-based litters, and its cedar scent absorbs litter box odors. Another type is made from the waste products of aspen lumber.