In terms of the worldviews that drive American life, the 2015 National Prayer Breakfast was a head-on collision between NASCAR and NPR.

Both President Barack Obama and NASCAR legend Darrell Waltrip were the speakers and both were sure the world would be a better place if many sinners climbed down off their high horses and ate some humble pie.

First, Waltrip bared his own soul and described how he found what he believes is the one true path to eternal salvation. Then, moments later, the president told the same flock that religious believers who embrace precisely that kind of religious certainty are threatening the peace and harmony of the modern world.

This was, in other words, a morning for red religion and blue religion.

While the president's remarks comparing the modern Islamic State with Medieval Christian crusaders made headlines, Waltrip's blunt testimony contained words that -- for many in the interfaith audience -- were just as controversial.