There are a few issues with that car. https://youtu.be/AouW9_jyZck

On the backdrop of the first thing - the part that caught my eye was "Liquid H2 Tank" which... well... yea.

That's a different approach than a hydrogen fuel cell.

I'll also note that is a German car company and not Toyota (or other Japanese car company).

Right, but if they're essentially incompatible with fossil fuel ICEs, what relevance is there to this conversation? The only thing that binds them is that they combust, but there's no clear reason why fossil fuel companies would favor one technology just because it involves combustion.

They are compatible and relevant, GH2 can be fed to a gasoline ICE through a carburetor with minimal changes.

New productions of existing ICE models therefore can be converted into a Hydrogen variant much easier, without redesigning the platform, or having to burn bridges with ICE and transmission factories.

... while storing a tank of atmospheric pressure liquid H2 such that you can't store it in an enclosed space and will be nearly empty if you don't run it for 17 hours and has a range of 120 miles.