Hydrogen vs. Battery Electric Cars

@7:11 Your graph shows that battery EVs are heavier than fuel cell EVs.  But you don't say why this is a problem.

It's a problem because heavier vehicles take more energy (at the wheel) to move.  It's not proportional though.  Doubling the weight of the vehicle while keeping the size about the same (due to a huge battery) increases the energy use per mile by much less than 2x.

And, battery EVs are far more efficient getting from grid electricity to the wheel than fuel cell EVs.  Using your numbers, BEVs are 3x more efficient.

So your graph @7:11 is misleading.