Boom Supersonic has named their prototype the XB-1 and claim it is “history’s first independently developed supersonic jet and the fastest civil aircraft ever built”.
The company continued: “From 1903 to 1976, the speed of passenger aviation increased relentlessly from 7mph to Mach 2. Then something broke.
“Over the last 40 years, not only have we failed to generate further speed increases, we’ve lost supersonic capability.
“Supersonic flight removes a critical barrier to new business relationships, new cultural experiences, and more time with loved ones.”
Article source: https://www.express.co.uk/news/science/1070647/boom-supersonic-son-of-concorde-london-to-new-york-flight-travel