According to our research, <http://wiki.answers.com/Q/How_can_making_things_streamlined_make_them_go_faster?#slide=2>, making a vehicle streamline reduces the ar resistance on the object. So it will not have to work as hard at high speeds and can therefore go faster.
According to another source, <http://wiki.answers.com/Q/How_streamlining_affects_forces_and_speed_on_cars?#slide=2>, Streamlining is an application of fluid dynamics to an object in order to reduce its drag coefficient. The drag force on an object is determined by three things, the shape of the object, the fluid it's moving through, and how fast it is moving through that fluid. The idea of streamlining is to reduce the drag coefficient of a car by changing it's shape, thus reduces the amount of force the car has to fight against at a given speed or alternatively given the car's power allow it to go faster. It makes the car move easily through the air, which cuts down fuel consumtion. For race cars it gives more speed.
Streamlined car <http://www.luxuriousmagazine.com/2011/11/infiniti-reveals-the-shape-of-their-new-electric-sports-car-concept-for-launch-in-2013/>
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