These are the kinds of wrecks that make you gasp at what could have happened, because you don't have time to gasp when it's happening.
Mark Martin was dominant early in the Pure Michigan 400, leading virtually every lap until his speed got him into trouble. Bobby Labonte and Juan Pablo Montoya tangled, slowing up and forcing Martin into a spin straight down pit road.
Martin hit hard on the inside of the garage-entry wall, but fortunately for everyone involved, his car stuck there as if impaled. Had he hit just a few feet more forward, his car could have slewed straight into Kasey Kahne's pit box, or could have injured Martin himself. (Martin was treated and released from the infield care center, tough as shoe leather. As always.)
Greg Biffle would go on to win the race in an interesting but overall unremarkable race day. Fortunately.