4 ms·Boom's XB-1 supersonic jet has been authorized to break the speed of sound3 points by gulced 2y agofsagx 2y agoBuilding a new airframe AND a new engine from scratch? Only to, if successful with all that, bump into the same economics as the concord? Wouldn't a business jet first be the smarter play?dazc 2y agoPutting the cash in an interest bearing account would be even smarter.