Hyundai Nexo hydrogen fuel cell vehicle review

We take an opportunity to drive Hyundai's Nexo SUV, a hydrogen fuel cell-powered vehicle (FCV) that is currently not on sale to the general public in Australia. What are the benefits of this technology? we already know that battery electric vehicles (BEVs) are fundamentally more efficient in their energy usage than FCVs, so what exactly is the point of the Nexo?