That would depend heavily on the effect on the volume of flights, fuel per seat ...

		h4nkoslo on Oct 25, 2016 \| parent \| context \| favorite \| on: Boom Wants to Bring Supersonic Civilian Travel Bac... That would depend heavily on the effect on the volume of flights, fuel per seat per mile, the energy inputs to constructing the plane & its maintenance parts, and their sources...