A married couple is driving along a highway doing a steady forty miles per hour. The husband is behind the wheel. His wife suddenly looks across at him and speaks in a clear voice "I know we've been married for twenty years, but I want a divorce." The husband says nothing, keeps looking at the road ahead but slowly increases his speed to 45 mph. The wife speaks again. "I don't want you to try and talk me out of it," she says, "because I've been having an affair with your best friend, and he's a far better lover than you are." Again the husband stays quiet, but grips the steering wheel more tightly and slowly increases the speed to 55. She pushes her luck. "I want the house," she says insistently. Up to 60 mph. "I want the car, too," she continues. 65 mph. "And," she says, "I'll have the bank accounts, all the credit cards and the boat." The car slowly starts veering towards a massive concrete bridge. This makes her a wee bit nervous, so she asks him: "Isn't there anything you want?" The husband at last replies - in a quiet and controlled voice. "No, I've got everything I need." he says. "Oh, really?" she inquires, "so what have you got?" Just before they slam into the wall at 65 mph, the husband turns to her and smiles.................. "The airbag."