I drove 1800 miles in a Hydrogen Car

I hadn't really internalized how the membrane works before and still had it in my head that it was a generator powered by an ICE. I do have to wonder about the mining cost of platinum with regards to the environment, but as far as I know its a more common material in industry than that for BEV batteries. This said, some companies, particularly ones that build fleet and construction vehicles such as the UK's JCB are essentially modifying combustion engines, which does give it an incredibly low development cost and presumably means that mechanics won't have to do as much relearning.