I'm in the same boat. I think they have made a very deliberate calculation and are one of the companies that has the data to make said calculation. I assume they aren't whimsical or stupid, so I would really like to know what Toyota is thinking.

Honda is a bit more understandable since airplanes look to be going to hydrogen and they make airplanes too, but not that much more really. I assume they have some very good reasons.