Roof flaps Rectangular pieces of metal attached to the car's roof that are designed to lie flat when the car is going forward, but pop into the air if a car spins sideways or backwards, to help keep the car from going airborne. How a car is prepared for qualifying and a race, including the suspension, weight distribution and engine tuning. Spotter Team member who watches the race from atop the grandstands or press box and serves as the driver's second set of eyes, telling him where to go on the racetrack to avoid an accident or to gain an advantage. Suspension The system of springs, shocks, sway bars, etc., that affects the car's handling. Sway bars Alters the degree to which a car rolls to one side or the other through turns.
Drivers use it instead of a speedometer to determine how fast they are going.
Tech Lingo for technical inspection. When front tires don't turn well through the turns because they are losing traction before the rear tires. Window nets Screens made of a nylon mesh that cover the driver's side opening and keep the driver's arms and head inside the car during a crash.