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. Different car makers achieve this in different ways, but here is the most common method: The seat is made with more porous material than traditional car seats, which are made to allow air to flow through them.
How Does a Radiator Fan Work? A radiator fan exchanges heat in the engine. When an engine is running, it produces heat, and that heat dissipates so that the engine does not become too hot and overheat. The cooling fans are part of the cooling system and their design helps to keep a cooler temperature in the engine.