Improvements like this I believe, show how much science Elon Musk doesn't understand or is willing to acknowledge. Sure, I'm a fan of the Musk, however advancements like this show his hydrogen FUD is really just a marketing ploy / positioning stunt [1].
Once we can create better means than metal hydride [1] in order to store hydrogen it will become the de-facto fuel for long haul trucks and electric aircraft. Assuming fuel-cell tech continues it's steady YoY improvement, hydrogen IS the future.
0 - https://www.cnbc.com/2019/02/21/musk-calls-hydrogen-fuel-cel...
1 - https://www.energy.gov/eere/fuelcells/metal-hydride-storage-...
edit - of course, I should've known the Tesla shills would downvote this... You dirty animals, I own a Model 3.