Car Stop?

In Formula One, cars make pit stops with the primary purpose of refuelling and changing tyres, although during the 2005 season tyre changing during the race was prohibited. Teams sometimes also make adjustments to the front and rear wings and perform minor repairs, most commonly replacing the nose and front wing assembly. A pit stop involves about twenty mechanics, with the aim of completing the stop as quickly as possible. It lasts for six to twelve seconds depending on how much fuel is put into the car. However, if there is a problem, such as a fuel pump failing or the engine stalling, or repairs having to be made, it can take much longer. Cars are fuelled at a rate of more than 12 litres per second. This is accomplished by a fairly complex closed system that pumps air out of the car's fuel tank as the fuel is being pumped in.