Green Energy

No, the 70% for EVs is in real world conditions. The 30% for hydrogen is in ideal conditions, it's usually around 10% in real life conditions right now.

And the efficiency of EVs doesn't decrease that much at temperature increases or decreases, especially not down to the efficiency that hydrogen has right now.

This video is sadly only in German, but the guy who made it is a researcher for hydrogen and batteries (he knows what he is talking about), he explains it very well, why hydrogen will never work for cars: https://youtu.be/ZXC33UjdtBU

Hydrogen might be clean if it is produced from renewable energies, but we don't even have enough renewables to cover our current consumption, much less 3 times as much to cover everyone using hydrogen, and I don't know what you mean by abundant, of course it is around everywhere bound in water, but we can't use it before splitting it, which needs those insane amounts of energy.

There are also no projects that are able to go above those 30% because it's just not possible, we can't break the laws of physics.

We get new battery advancements every year, the current Trend is replacing everything with LiFePo4 batteries that are almost as good as LiNMnC batteries, because they need much less rare materials. Those batteries weren't good enough a few years ago to be used in cars.

In the End electric cars are already good enough for almost all use cases and cost competitive, factoring in the running costs, while almost all car manufacturers have given up on hydrogen because they made losses even with their very expensive hydrogen cars.

I am seeing you being part of the "fusion is almost here" crowd, EVs don't need to improve anymore to be competitive, but they most likely will, considering that the market for EVs is pretty big nowadays.