This California startup, which raised millions to develop a supersonic jet designed to be quieter and greener than the Concorde and capable of flying passengers from L.A. to NYC in just 3 hours at business-class fares, has now gone bankrupt and is selling its patents
byCalifornia-based supersonic aircraft startup Exosonic has announced that it is shutting down. The company issued an update on its official website stating that it…