The National Party has been busy defending its plan to reintroduce roads of national significance, a $24 billion plan the Government says faces a $10 billion hole.
National Party leader Christopher Luxon says private equity will fill that supposed gap.
But there's another gaping hole in National's transport announcement - how it plans to reduce transport emissions.
Waka Kotahi is tasked with reducing transport emissions by 41 percent by 2035 - the period in which National plans to build, build, build.
Christopher Luxon spoke to Guyon Espiner.