I drove 1800 miles in a Hydrogen Car

Thanks for the videos. It's sad to see that in the comments, many people seem to be missing the forest for the trees. Massive scale green hydrogen production is inevitable for ammonia and methanol production, the former of which is necessary to support agriculture. There are 250GW of green hydrogen electrolysis projects currently in the works, so pearl clutching over where the hydrogen comes from seems a bit shortsighted, for the exactly the same reasons that criticizing BEVs for the source of their electricity would be. Green hydrogen isn't a choice, it's a necessity if we want to feed everyone without using fossil fuels.

The comments on the relative efficiency of fuel cell vehicles versus BEVs are similarly misguided, given that every year, California alone already curtails enough electricity to charge 25 million, 100kWh battery electric vehicles, and no one bats an eye. When VREs like wind and solar provide the backbone of our energy generation, we're not going to worry about the well-to-wheels efficiency of fuel cells, because we're going to have far more than enough to go around. Denmark already produces 40% of its electricity demand on average through wind, but this spikes up to 140% during periods of overproduction. If Denmark wanted to meet even 80% of its electricity needs through wind with some level of statistical confidence (say, 80% confidence) it will *average* more than 100% of its demand every day. At a macro level, this also applies to larger regions like the EU or the US, because they'll still want some level of statistical confidence in their ability to provide X units of power from variable sources.

And this is before getting into other issues with BEVs, like coupling between charging times and generation: to charge a BEV with a 100kWh battery in 3 minutes like you would a normal ICEV would require a 2MW charger, which is non-trivial. You can avoid this if trickle charging is everywhere, but then you still need extensive grid upgrades on practically every street corner for those who use on-street parking. The point is: fast charging is only partly about the technology in the battery -- the rest is up to the grid to either be able to produce MWs on demand from variable sources, or to pursue extensive upgrades so that people in apartments don't have to sit at a fast charger for an hour every week, because they can charge on any street corner. Hydrogen decouples this whole process, since you have massive, steady demand and don't need to provide instantaneous changes in power, and it's a source of energy that can be shipped around. It's not clear to me whether hydrogen is necessarily better for transport than ubiquitous chargers, but it's 100% clear to anyone who's paying attention that we'll be making and shipping a huge amount of hydrogen around anyway, so it almost certainly has a place somewhere in the transport equation.