So how did they wind up inside the car? In 1988 a Madison clerk was driving them to a storage warehouse when his car failed. He left it at Johnny’s Transmission Shop but never came back to pick it up. There it sat until last spring, when a tornado wrecked the car. An insurance adjuster then stumbled on the documents. Prosecutors believe the papers will help illuminate McDougal’s and Clinton’s business ties. Says one: ““It’s another piece of the puzzle.''