Couple that with an increasing push industrially (not pie in sky)https://www.telegraph.co.uk/cars/news/hydrogen-fuel-cell-trains-run-british-railways-2022/
Growing list of car manufacturers
2007 - Honda FCX Clarity - hydrogen fuel cell.2010 - Mercedes-Benz F-Cell.2014 - Hyundai Tucson .2015 - Toyota Mirai - 2016 - Riversimple Rasa.2016 - Honda Clarity Fuel Cell.2018 - Hyundai Nexo.
I think it will be the preferred path - as there is a growing push down this path.