If the rebuilding of Iraq can, unlike the development of nearly the entire middle east, be at least partly transit-orientated, it would be an amazing thing.
I'm always amazed at the newly emerging economies building around the car, despite the fact we all now know it's unsustainable in terms of fuel resources and the environment, and it will always inevitably end up in congestion that no matter what you do, you can never quite solve. To have an economy built entirely on sustainable transport with no thought given to the automobile would be an amazing thing, and also something entirely achievable as countries presently lacking much of a serious road infrastructure and having very little car ownership develop.