Hydrogen vs. Battery Electric Cars

Good introduction on this topic. I have a few questions and comments.

1. Give the significant energy loss with hydrogen from creation to use that you noted, it seems to me that if H2 is produced by electrolysis that the same or greater electrical grid demands would exist as simply recharging  BEV every day. The Toyota people were silent on this, only commenting that this was a downside of BEV.. What do the calculations show on electrical grid demand if both types were existing 50/50 in the market ?

2. The video was also silent about simplicity and maintenance. A BEV has no moving parts for energy creation in the power train, compared to a combustion engine using hydrogen. Thoughts? 

3. Building off #3, a hydrogen combustion engine, while not producing CO2, still combusts N2 and O2, creating high levels of nitrogen oxides, which pollute the air. A BEV produces none. The video was silent on the environmental impacts.

4. Hydrogen and the Hindenburg is top of mind to me and I wonder what’s the risk here, including in its transport and distribution, compared to a BEV powered vehicle.