aircrafts and fast cars are streamlined so that the air flows over them more easily
There are many things that are streamlined; Bottlenose dolphins, Mako sharks, submarines, cars, boats, aircrafts, rockets, snakes and fish.
to be able to get through water as easily as possible, the same way that planes and fast cars have to be streamlined.
race cars are streamlined so that they can try to be as quick as possible and also so that they can acheive the highest speeds that they can. i mean they are streamlined because they want to be quick and overall they wont to win the race :)
It's a marketing image that symbolises speed. The jaguar is a fast animal, with a streamlined body. The car of the same name is designed to be streamlined, and is a fast vehicle.
The most common features in modern cars that help to reduce air friction is the streamlined design of the bumpers and spoilers. The streamlined shape of fast cars also helps to reduce drag.
Cars with good aerodynamics.
Their shape and aerodynamic efficiency makes them streamlined.
Ferrari
They have a streamlined bonnet so that the air will be pushed over the car.
the way they were desinged by the builders
Helps improve fuel mileage.
all cars have some sort of degree of aerodynamic as the air flows around the vehicle. even a brick is aerodynamic, some examples of more aerodynamic cars include bugatti veyron supersport and hennessey venom gt. these cars are very streamlined and are designed to let the air flow around them easily, reducing the amount of air particles colliding with the car, this reduces air resistance which consequently increases the cars speed, all sports cars have to be aerodynamic to be able to run at fast speeds without a streamlined bodyshell the effects would be enormous, there is no good putting a v12 engine in a car which is basically like a square, it will be fast but not as fast as it could and should be.