While inefficiency is indeed a problem, I feel like a lot of people overlook the one huge pro hydrogen has over batteries, namely charging time. Of course this might not be important for the daily commute, or 99% of the vehicles' use. But for that remaining 1% it _is_ a huge deal. And most people buy cars to fulfill a 100% of their needs, not 99%.

Now I should say, I know basically nothing about battery tech. But unless full charging time can be greatly reduced, by which I mean under 5 or at most 10 minutes, I still feel hydrogen could have the upper hand even if it is more expensive and less efficient.