The potential benefits of high-speed rail are huge. Transportation planners say a bullet train would meet or exceed the demand for transportation from our growing population between now and 2030 — at less than half the cost of building the five airport runways, 90 departure gates and 3,000 miles of new freeways that would otherwise be required. Building the system will provide 160,000 construction jobs and 450,000 permanent jobs in related industries, providing a much-needed boost to the economy.