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.
1 Answer. Seat heaters in cars are essentially electric blankets built into your seats. That is, they simply run current through a series of resistive elements to generate heat. This is no different from any other electric heater. It is different, however, from the heater in your car that is part of the HVAC system.