You're right, he BEV will not be the final destination of the car.

But hydrogen is not next. Not for cars.

Plausible for trains to replace the diesel in diesel electric.

Possibly for some long haul freight and certain sectors of heavy machinery.

Definitely for the shipping industry as the tankers can replace bunker fuel with hydrogen.

Likely even for some planes as batteries won't be energy dense enough and light enough!*

But for cars: after the BEV it will be solid state supercaps.

* until supercaps