Hydrogen vs. Battery Electric Cars

I tend to think of Fuel Cellls as a different, perhaps unconventional type of battery, but batteries cover a wide variety of things. The original Voltaic pile (battery) was a series of copper and zinc discs separated by brine filled cardboard. Fuel cells can at least in principle be run in reverse turning electricity into hydrogen (recharging the battery). It is not necessarily efficient and I don't think most fuel cells are designed to do it, but ones that are Regenerating Fuel Cells are a thing.

Some people had questions about your weight versus range graph. It might help to put works cited in the video descriotion with fuller bibliographic info, so that graph references Thomas 2009, which is "Fuel Cell and Battery Electric Vehicles Compared" by C. E. (Sandy) Thomas, Ph.D., President
 and a copy can be found freely via a Google search.