That is the number one thing I try to clear up about high-speed rail when I travel the country. We have way more than enough population to support high-speed rail. That is an argument that road engineering consultants used for 20 years in Canada to say why we shouldn't have one. We have way more than they have between Madrid and Barcelona. It's not an issue. We have the people. It's a good question, though.
On May 14th, 2009. See this statement in context.