[tobinfricke]

What cargo would justify a supersonic flight?

[bcatanzaro]

They often flew mail on it as their cargo. But the plane was more a matter of national pride than something that made sense.

[mattclarkdotnet]

Anything high value and perishable, like sushi grade fish for example. Or did you mean morally justifiable?

[iancmceachern]

Flying fish that are increasingly not sustainably harvested on insanely fuel in-efficient supersonic planes is exactly humanity deserves to go extinct.