This from a RNZ article
Prime Minister Jacinda Ardern said with transport making up the country's second-highest amount of emissions after agriculture it was "important we reduce emissions from our vehicle fleet".
Transport Minister Michael Wood said the government had agreed in principle to mandate a lower-emitting biofuel blend across the transport sector.
"Over time this will prevent hundreds of thousands of tonnes of emissions from cars, trucks, trains, ships and planes.
The government can mandate all they like if the product isn't available then it won't happen. I know bio fuels have been tested in aircraft but the regulatory hurdles for aviation could be challenging. We don't make aviation fuel here as far as I know. Even if we did the regulatory requirements may be prohibitive for the relatively small amount we might make. Once a gain we will most likely be reliant on what the market has available.