I've been involved in Stock car and sprint car racing on dirt and asphalt so our cars have been torn down,pumped,tubed,weighed,magnetically checked(rods)and even sonic checked on occasion.(roll bars)I also have friends who have regular personal and business dealings with several top level NASCAR/IRL/WoO drivers and I get to hear what these guys say pretty much verbatim.Would it surprise you to know that one of the top guys right now thinks NASCAR is a"joke"?His words,not mine.He said it was like racing in the WWF.Of course it was all stuff that these guys would never admit to and I'm not one to air anybody's dirty laundry so I'm not naming names.But I know what goes on in racing.I have several reasons for not liking NASCAR,and the fact that they enforce the rules arbitrarily is only one.And I have nothing to gain by stating these things so why would I lie?