Drivers are paid huge salaries and money to risk their lives every time they step into the cockpit of the F1 car. Like all types of motor racing, the dangers associated with Formula One are great. Therefore, there are many safety measures. Drivers wear 4 layers of flameproof overalls, made of a fire resistant material called Nomex. A drivers helmet must be able to resist an 800 degree Celsius flame for at least 45 seconds, as well as big G forces. The helmets are so strong that they can be driven over by trucks with no damage being done to them. Carbon fibre is the ideal material for the bodywork of Formula One cars, as it is light and strong. Because of this, the cars are very expensive to build and repair. The design of cars differs from team to team. Each team has two entries into the championship, which means two cars to build. The current tyre suppliers are Pirelli - making sure every car has the right tyre for the differing weather conditions. Wet weather driving is considered a skill in Formula One, as the cars are harder to drive. 