This final note today. I'm dating myself here, but I remember when running shoes didn't have much more than waffle prints on the soles. Nike's in particular. The true story is that University of Oregon track coach Bill Bowerman made the first pair of waffle-soled running shoes on his waffle iron, a machine long thought lost to history.

I read today on Bowerman's daughter dug the thing out of an old box last year. It was put on display at Nike headquarters on Monday.

Follow Kai Ryssdal at @kairyssdal