Mulally was the best thing to happen to FoMoCo in a long time - maybe since Peterson. Still, to give them their due, the engineering for automobiles is still challenging, it's just different. In Aero, you have to design for ultimate reliability, but also have the luxury of designing where you can rely on regularly scheduled maintenance and troubleshooting. In auto, you have to make things that survive all kinds of abuse, mud, dirt roads, burrowing animals, being ignored literally for years, and have accountants over your shoulder shaving your costs down to the decimal places of pennies.