Hydrogen fuel cells use about 3x the electric energy vs. battery powered cars, if you create hydrogen via hydrolysis. It is not only the energy used for creating the hydrogen, but also the compression and transport of the hydrogen is using a lot of energy.
Hydrogen is a non-starter. Many leakage, cost of energy, risky transport issues to overcome.
Expensive materials (platinum) and difficulty making them small enough for a car.
Is hydrogen low stability and easy leakage not an issue anymore?
From what I understand, it's handled by well placed fuel tanks, where even if they blow, no on inside the vehicle gets hurt.