I would recommend design-build type contracts. They are really in many ways par for the course in a lot of infrastructure projects, so we're already bundling that. Cost overruns are a major issue on megaprojects and getting a handle on that is really important.
I would say that bundling design, build, and finance for that initial construction period is quite a sensible bundle. When you have the operation and maintenance in the bundle, and the long-term finance, private finance is much more expensive because the risk profile goes down significantly after the construction period is over. Do you need that finance in there over the whole period? I would suggest that in Canada, we've generally been more sensible in paying out what are known as milestone or substantial completion payments to try to remove some of that financing at periods earlier on so that the government is not paying the much higher borrowing cost over the entire life of the project.