From memory, so it might be wrong and probably outdated: - the cells themselves weren't exactly cheap (lots of platinum) but that was IIRC non-recurring cost

From memory, so it might be wrong and probably outdated: - the cells themselves weren't exactly cheap (lots of platinum) but that was IIRC non-recurring cost - storage is non-trivial due to hydrogen embrittlement and the like, while methods that are safe from it have other issues. Toyota has, AFAIK, this year or last year presented a serious improvement in that area with removable, rechargeable hydrogen cartridges - even if they break, less expenditure to replace, plus they make off grid operation much easier - hydrogen has a chicken and egg situation where vehicles need a robust network of charging stations but to build such network you need customers - a circular dependency. According to NIST studies on the topic, charging stations with in-situ electrolysis equipment and only a buffer tank are best option, so you effectively have same requirement as for BEV chargers plus source of clean water Note that BEVs made a run around the problem by having early adopters depend on home chargers that offered enough range for city driving - essentially validating the need for charging network by having cars already on the road. (subsidies helped of course) That said, energy density of hydrogen is orders of magnitude better than batteries, so unlike with electric cars the question is not "we need unknown new technologies to get effective long range truck" but just a matter of money to actually turn prototypes into operational model.