Another cool thing about this (aside from not needing to carry around it's own oxidizer) is that a car-sized pack would be small and light enough to make batter

Another cool thing about this (aside from not needing to carry around it's own oxidizer) is that a car-sized pack would be small and light enough to make battery swapping a reality. Li-Ion and older technologies make battery swapping hard because the pack is large and heavy enough that it really needs to be integrated into the vehicle chassis, which means that each model of vehicle—or at a minimum each class of vehicle—needs a different pack. Something roughly the size and weight of a gas tank would be much easier to swap out and could probably come in only a few different sizes. Another thing I'm wondering is if the battery could be simplified by "reprocessing" rather than recharging it. For instance, maybe the anode could be a big spool of lithium "tape" that is slowly unwound as it gets oxidized, with the spent lithium oxide wound around another spool. The whole thing could be mounted in a "cassette" that would be swapped out a reprocessing station, where it could be de-oxidized in a controlled environment and at a controlled rate using off-peak grid power.