Drafting

When two or more race cars run closely behind each other, sometimes nearly touching. The front car breaks through the air allowing the car in back to have less air resistance and to gain speed. Often a car will use the draft to gain speed and then use the momentum to pass the car in front of it. This is a major strategy in all races, but especially in restrictor plate NASCAR races.

The practice of two or more cars, while racing, to run nose-to-tail, almost touching. The lead car, by displacing the air in front of it, creates a vacuum between its rear end and the nose of the following car, actually pulling the second car along with it.