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.
All current Graco car seats and high back boosters have been tested to this standard. 2X Car Seat Standard â Graco has developed a structural test for all of our car seats that simulates a collision with twice the force of current federal standards for testing car seats. Children should ride rear-facing in a car seat up to two years old. 2  Children should sit in a booster seat until they are 4â9â. 3  For more information on the new recommendations, visit www.AAP.org.