The same applies for home hydrogen storage too. Compressed hydrogen is good for months. Another option would be metal hydrides which apparently last a long time too. The problem is that you simply cannot power your house entirely with batteries alone.

Even in tank form, you can store it for months. It is not much different than CNG.

Large-scale solutions matter too. The utility companies can utilize such a thing.

Underground caverns can store it for years. This is simply not true.

You would store it as a pressurized gas in this scenario. You would only use liquid hydrogen in specific situations.

Hydrogen can be stored for years.

Mostly political and economic inertia.

It’s far cheaper to distribute energy via hydrogen than it is to distribute energy via electricity, especially over long-distance: https://docs.nrel.gov/docs/fy22osti/81662.pdf

We will likely make hydrogen where it is cheap, and then distribute via pipelines or other methods to where it is needed.

BEVs are still cars and create massive traffic problems. Cars are not guaranteed to be faster. We cannot all use cars for all of our transportation needs anyways, so alternatives need to exist regardless.

Humans burns calories all the time, even when resting. And you still need to exercise. Might as well power a real bike instead of a stationary bike. So this is a totally silly thing to worry about.

A cargo bike can go anywhere a normal car can go. An e-bike is many times more efficient than a car. The argument used in favor of EVs over ICEVs also applies to e-bikes over EVs.

I understand that it is a matter of degree. But that means accepting that the BEV is a compromise no matter what their boosters claim otherwise. And there is room for another level of compromise, where people get out of their cars and into something even greener. If people are to stay in their cars, then we might as well stop pretending to care about efficiency.

Many people need a change in lifestyle or livelihood to adapt to BEVs. It is hypocritical to claim that people can’t further adapt to bikes or at least e-bikes.

Cargo bikes exist too. You can carry significant cargo with them.

Likely a metal hydride based system. It is at present the only geniuinely mature way of storing hydrogen in a solid state form.

Millions, sure. But that’s still a niche.

It’s important to note that the car itself is a luxury or extravagance. The most practical form of a car is a bicycle, which most people don’t want. So inevitably, cars always become a way of showing off capacities that you don’t need. Cars with any kind of deficiency get weeded out, simply because they can’t show off those extra capacities. And battery cars have something like that. People will move away from them specifically they can’t do things like crossing the Outback.

I did not say you can’t have battery cars. It is just a limited technology and would likely shrink to a niche market without subsidies.

Round-trip efficiency is not that important. If it really was as important as claimed, we wouldn’t be talking about cars at all. It would all be about bikes, buses, trains, walkable neighborhoods, etc., instead. But in the real world, we will need to accept less-than-perfect solutions. So as long as the idea is green, it should be tolerated.

We also have far more renewable energy available to us than we could ever hope to use. It is orders of magnitude more plentiful than fossil fuel energy. As a result, there will be an overabundance of green energy in the long run. It is fine to use that excess of energy to make stuff e-fuels or hydrogen.

Most of your claims are just climate change denial arguments. Many of them were directly made up by the fossil fuel industry.

Electricity has gotten dramatically more expensive too. It is no panacea. In all likelihood, most of transportation will shift over to either green fuels (e-fuels) or hydrogen. Those are one-to-one replacements for fossil fuels.

Geothermal requires a enduring source of heat to be viable. So you are mostly looking at volcanic sources. The heat in many of these formations will probably not last long.

There probably wouldn’t be enough heat for that in most cases.

It is happening to me too.

It is almost certainly greener than using more fossil fuel. This is an idea that should be explored.