Boeing, Spirit disband engineering teams designing Aerion supersonic business jet

https://theaircurrent.com/aircraft-development/boeing-spirit-aerion-disband-engineering-as2/ 

https://www.aviationpros.com/aircraft/commercial-airline/press-release/21142886/globaldata-boeing-and-spirit-refuse-to-take-supersonic-gamble-for-postcovid19-recovery-says-globaldata