I think the assessment of the technologies is going to get to that. There are so many systems today that weren't available 10 or 15 years ago. High-speed rail isn't that old, actually. It's about 40 years old, and when we started, there was probably only one kind of system. Now in Europe every country uses a different kind of high-speed system. In fact, in some countries they might even be using more than one kind.
On May 12th, 2009. See this statement in context.