I could feel the heat coming off it when I stood next to the repaved section. They didn't repave the parking area at the edge. Opened to traffic again, seems firm enough to drive on at 160⁰F.
Based on the image they shared, the heat goes into the refrigerant, which then goes to a radiator to transfer into the outside air.
It doesn't use outside air in the sense that the battery doesn't transfer heat directly to the outside air. There's the refrigerant between the two.