Your cheatin' car.(how NASCAR teams break the rules)

NASCAR teams will do anything to win a race, including cheat. But exactly how do they break the rules and get away with it?. We decided to find out.

NASCAR has taken steps to make sure its drivers play by the rules. But despite changes in technology, it doesn't always work.

As the early Alabama sun scorches the Talladega asphalt, heat of a different kind is on the 43 cars as they line up to enter NASCAR s infamous "Room of Doom." This is the place where prerace inspection will continue until the last infraction is discovered.

The brightest minds in the garage study the cars. Steve Hmiel, Robin Pemberton, Michael McSwain, Todd Parrott and his father, Buddy, are among those who watch the NASCAR inspectors measure, weigh, probe and prod the powerful race cars that will soon be turning laps at close to 200 mph.

As the two Chip Ganassi cars roll into a tech bay, McSwain's trained eye notices something. The two cars, made by the same manufacturer, have two very different greenhouses (the area from the base of the windows up to the roofline). McSwain makes a mental note: If one of the cars is more successful during a race, he will know why.

This is the weekly routine that is a key part of NASCAR's evolution. If one team gets away with tweaking the rules, chances are other teams will incorporate those same innovations the next week Some call it creativity. Some call it cheating.

"`Cheating' is such a harsh word," says Ken Howes, director of racing operations at Hendrick Motorsports.