Transport is a critical part of the challenge and of the solution. We have made progress by investing significantly more in public transport and rail and walking and cycling, but there is much more to do. The clean vehicles bill represents a major step towards decarbonising our transport system, which produces nearly half of New Zealand's carbon dioxide emissions. The transport sector currently produces 43 percent of New Zealand's carbon dioxide emissions and 20 percent of all greenhouse gas emissions. To achieve major emissions reductions, we must clean up the light vehicle fleet in New Zealand, which is currently one of the most polluting and least efficient light vehicle fleets in the OECD.