Whats drafting?
As a car moves, it has to push aside the air its driving through. The air, previously in a relative uniform state, is sent into chaos, much like the water in a boiling pot. The farther back from the car you go, the closer the air is to being back in its original state. If a second car is within that area of disturbed air, though, it doesn’t have to work as hard to move the air out of the way: The air “wants” to move around the car. This second car can now use some of the horsepower it would otherwise use to push air to gain ground on the car in front. It is “drafting” the leading car.
