The Louisiana Purchase stretched from the Mississippi River to the beginning of the Rocky Mountains. Official boundaries were not determined, except that the eastern border ran from the source of the Mississippi River north to the 31 degrees north.
Cooled (or air conditioned) seats work by confining cooled air directly in the seat where the passenger is seated. Multiple fans are put within the seat to provide air circulation. The air from the fans blows through a diffusion layer to spread the cool air throughout the seating material, cooling the whole surface.
Heated seats, meanwhile, use the same technology as electric blankets or other appliances and gadgets that use electricity to create heat. It uses a long strip of a heating element through the material of the car seat called a resistor that heats up when an electrical current is run through it.