The Trump administration is looking to “unleash the potential” of private investors to boost the national transportation networks that underpin the U.S. economy, transportation secretary-designate Elaine Chao plans to tell lawmakers at her confirmation hearing Wednesday. Economic gains are being jeopardized by infrastructure “in need of repair, the specter of rising highway fatalities, growing congestion, and by a failure to keep pace with emerging technologies,” according to prepared testimony Chao plans to deliver to the Senate Commerce, Science and Transportation Committee.