Well, exactly the same problem applies to hydrogen-fuelled cars – almost all hydrogen production is still done using steam-reforming of fossil fuels, leaving CO

Well, exactly the same problem applies to hydrogen-fuelled cars – almost all hydrogen production is still done using steam-reforming of fossil fuels, leaving CO2 as a byproduct. It might be possible to ramp up more carbon-neutral methods of production, but you face the same problem with electricity, so…