Only a concept rendering has been released to the public so far. With a 2019 release date Hyundai appear to be working at a speed much faster than most other manufactures. https://www.hyundai.news/eu/technology/hyundai-motor-presents-first-look-at-new-truck-with-a-fuel-cell-powertrain-ahead-of-iaa-commercial-vehicles-2018-announcement/
Looks like they have buyers for their trucks. https://www.driven.co.nz/news/news/hydrogen-boost-hyundai-confirms-plans-to-make-1000-fuel-cell-trucks/
HFC are showing great promise in large applications, e.g. ferry boat in San Francisco, semi trucks by Hyundai and Nikola, locomotive in Germany. Looking forward to the Hyundai Nexo FCEV SUV. Sent from my SM-N910V using Inside EVs mobile app
Larger vehicles can use larger tanks or cryogenic hydrogen. These do not change the cost per mile but makes the vehicle ... less bad. The Germans have a hydrogen fuel cell submarine, cryogenic hydrogen and oxygen, that I understand is very quiet. Bob Wilson
