Jimmy, pointing out the encryption mark on the Nascar motor. This mark is scanned to make sure no one has swapped any engine parts. All racers in this class use the exact same motor so any kind of change would suggest cheating.

This photo is from the thread "Jimmy B's World" in the Photography & Digital Camera Forums.

Click the following link to view the thread: http://forums.photographyreview.com/...ad.php?t=56704