The point of stock car racing is that they're supposed to be on a level playing field. Obviously the 48 team has figured out something that no one else has. They are way to consistent. This is reminiscent of the King in the 70's when no one could stop him. Once everyone figures out what Chad Knauss has figured out, it'll even out.
Knaus has been suspended once and fined a few times for cheat... er, I mean "liberal interpretation of the rules". Once they figure out what he's doing, their run will be over. We might not hear about it, but somewhere along the line they won't win so much.
For example:
In the mid to late 80's when Dale Earnhardt was winning a lot, part of that was due to the fact that little by little they narrowed and lowered the back corners of his roof, an area the templates didn't check, and that dumped more air to the rear spoiler. At some point NASCAR got wise and came up with the X-template, Richard Childress and Dale got a slap on the wrist, and suddenly wasn't as dominant as he had been.
In the late 60's Richard Petty was crushing the field and won 27 races in 1967 when they often raced twice a week. They weren't exactly cheating but they were the first team to figure out that moving as much weight as possible to the left side of the car helped the handling a lot. At that time there was only a minimum weight for the whole car and the rules didn't say where the weight had to be.
Smokey Yunick is legendary when it came to "liberal rules interpretation". Smokey's logic was that if the rulebook didn't mention something then there was no reason why he couldn't do it. Therefore, he built a race car with a 1" diameter fuel line snaked around the frame as much as possible that held an extra 3 gallons of gas. NASCAR didn't like it but it there was no rule on maximum fuel line size...until the next week's race. Of course the greatest Smokey Yunick story was the time NASCAR had pulled the gas tank out of his car and was giving him a hard time about it, he got mad and hopped in the car and drove away...with no gas tank.