Today, the Overture's SAF capabilities should help address environmental concerns. Meanwhile, the "Boomless Cruise" will allow the Overture to fly supersonically overland without the sonic boom.

[Courtesy: NASA/Boom Supersonic] We know what a sonic boom sounds like ... is about one-third the size of Overture, a supersonic, SAF-powered airliner it is developing for 64 to 80 passengers ...