The same question has to be asked of the old timers, when there was less oversight. Judging by how many times Earnhardt came out of his last pitstop running a few miles faster than he had all day, I think the RCR rocket fuel bill was quite high.
And because of this the governing body started taking a closer look at the cars.
I was told JJ's car failed post race inspection the first time through tech after yesterdays race. The car was allowed to "settle down" so it would pass.