Dry ice is indeed routine, but I think usually used to ship things which need to stay below -10C, not below -60C. So there has been some work in figuring out be

Dry ice is indeed routine, but I think usually used to ship things which need to stay below -10C, not below -60C. So there has been some work in figuring out better shipping boxes, tracking devices, procedures for breaking down large shipments at the airport, etc. But the layer of guys driving trucks around town is of course the same.