Just after Brad Keselowski hit his top speed during an organizational test on Tuesday at Watkins Glen International, the unthinkable happened.
According to NASCAR.com, Keselowski had just registered a speed of 124.6 MPH when the rear brakes of his car failed, sending the driver head-on into the tire-pack barrier.
"Just the pedal went to the floor," Keselowski said. "It means that you've lost brakes on one of the corners. At a track like this, you're already on the edge. You don't have any room or margin for something to fail. That's the way it is.