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.
Dual Zone Climate..How does it work? This question is based on the assumption that the small grill under the fan control is the temperate sensor, so if I'm wrong the question is invalid. However - how can the climate control regulate the temperate of the driver and passenger zones independantly with only one sensor? My manager's A6 has a sensor grill under each dial which makes more sense (although they're that close together I doubt it makes much difference).