President-elect Trump promised to steer an additional $1 trillion worth of new infrastructure into the U.S. economy over the next ten years. Critics object that this cannot be done without raising taxes, but they are clearly off the mark: Electronically collected tolls could finance about $1 trillion worth of improvements to the Interstate Highway System, according to a 2013 study by Robert Poole at the Reason Foundation.

Indeed, private financing presents a deep, untapped well for infrastructure investments that could also fund pipelines and air traffic control, as is done successfully in Canada.