Riding bumper-to-bumper at nearly 200 mph, Austin Dillon was smack in the middle of a pack of cars headed to the checkered flag when he suddenly was sent on the ride of his life. The fence acted like a slingshot, sending the sheared race car back onto the track, where it landed on its roof and was hit again while the engine block smoldered nearby. Left behind were a handful of fans who received only minor injuries from the debris, and a gaping hole in the fence, the mesh torn away. “It happened so quick,” said Dillon, the grandson of car owner Richard Childress and the first driver entrusted to drive the famed No.