NASCAR is not always just about going fast. It is possible to outsmart your opponents and take the win without being the fastest. Just don't go too far and break the rules. This area is all about the decisions that a team can make before and during a race that can help, or hurt, a driver's chances of winning.

It's on the right hand side
http://nascar.about.com/od/rulesandstrategy/NASCAR_Rules_and_Strategy.htm

Can you pass this NASCAR rulebook quiz
http://nascar.about.com/library/quizzes/blrulesquiz.htm