It's 'innovative finance' writ large. The US President's budget for transportation provides for $556b surface transportation spending over six years, a 60% increase over the inflation-adjusted spending of the last six years, they say. And for 2012 the administration proposes $112b in spending (styled 'investment'), almost double 2011's outlays.
The White House budget chapter on transportation has a summary box called "Funding Highlights" but there's not a single mention of funding under that heading. It's a list of bullet points about proposed spending, called investments.