The logistic problem will be a major blocker in most of the other parts of the world, for e.g. anywhere in developing world. Even though it might work for US, rest of the world will still have the logistic problem due to the temperature restrictions.
IDK, put that shit in a properly insulated box stuffed with dry ice pellets, you'll maintain ultra-cold for three days easy with no electricity. So if you're loading a plane in Europe that spends 24 hours flying to $remote_destination, it still leaves you with 48 hours to do distribution by road, then you have another 5 days at normal freezer temperatures that is available for actually giving people the vaccine.
Flight from Wisconsin to any airport in the world in 24 hours. Plenty of time to distribute from then - especially as it’s cities (near airports) that are the main targets
