One of the things that really worries me about the concept of mass market hydrogen cars. I'm talking in the millions of units. Ordinary consumers do all sorts of slightly dangerous, ignorant things with their vehicles. Including neglecting maintenance.
I am not sure I want to see the average untrained person handling a precision refueling apparatus that connects to a tank at 250 to 700 bar pressure. It's a lot more complicated and technical of an interconnect to refuel compared to just sticking a petrol station nozzle into a tank and pumping.
I don't think a system that requires a professional refueler staff person at every hydrogen fueling station is a good idea either.
That is what worries me too. Not so much the current state of affairs, in which maybe several thousand to tens of thousands units driving around. But as the production scale goes up, so do the chances of hitting those unforeseen (or willfully accepted as "cheaper" to mitigate with financial compensations, because that is how the industry functions) corner cases where things will go wrong.
I am not sure I want to see the average untrained person handling a precision refueling apparatus that connects to a tank at 250 to 700 bar pressure. It's a lot more complicated and technical of an interconnect to refuel compared to just sticking a petrol station nozzle into a tank and pumping.
I don't think a system that requires a professional refueler staff person at every hydrogen fueling station is a good idea either.