This often causes the machines to fishtail as the rear end swings outward during turns. 2. Also unaffectionately referred to as "loose stuff.". Sometimes, youll hear that one car forced another to get loose, which is the act of disrupting the air flow to the back bumper of the car, forcing the back end car start sliding up the track, which can lead to a spin or, at the least, forcing the other driver to really work the wheel to save it. Pit road: The area where pit crews service the cars. Telemetry: Data detailing key functions of a race car such as RPM. The three national NASCAR series are:

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