Where will the money come from?

Obama's plan:

President-elect Barack Obama said he’ll make the “single largest new investment” in roads, bridges and public buildings since the Eisenhower Administration to lift the sagging economy and create jobs.

Obama, in his weekly radio speech today, said his plan to create or preserve 2.5 million jobs will also include making public buildings more energy efficient, repairing schools and modernizing health care with electronic medical records.

“We won’t just throw money at the problem,” he said. “We’ll measure progress by the reforms we make and the results we achieve -- by the jobs we create, by the energy we save, by whether America is more competitive in the world.”

Sure sounds like we're just throwing money at the problem.