In order to reduce the air resistance, both head cars of KTX have been streamlined after the shape of a shark's head. The design has been processed with gentle curved lines to add to the unique Korean style. Various devices installed below the vehicle have been covered up to reduce the air resistance. Gaps between each compartment and even the small sill between the window glass and the vehicle have been   minimized. Also, the outer surface of the vehicle has been processed with a sleek texture to minimize air resistance. While the existing trains are equipped with two bogies (motive power device to support the vehicle) per each compartment, KTX trains are equipped with articulated bogies structure equipped with only a single bogie between two compartments. This is one of the most representative means to minimize weight of the vehicle itself.       The huge source of power needed to produce the high speed of 300km/hour lies in the 12 traction motors with a capacity of 1,130kw per each for a total of 13,560kw, which corresponds to approximately 18,200 horsepower. In other words, the motors used to power the train are equivalent to that produced by 18,200 horses pulling the express train.