XB-1 Supersonic Rollout
How does this seek to overcome the problem that killed Concorde: Civilian sonic booms over populations are <i>illegal</i>, and most places aircraft want to fly to/from are cities?<p>Concorde found a kinda niche between the East Coast of the US and European cities near the sea, but it really doesn't feel sustainable for an entire aircraft class to be limited to only that route (and wasn't for Concorde).<p>If it doesn't go supersonic then what is the USP?