BLEEP BLOOP: I just saw an aircraft with callsign #ASA1222 (ICAO code #A657B9) flying at 310 kt at altitude 8450 feet MSL at coordinates 34.2412,-118.4791.

That's, like, super fast.

https://globe.adsbexchange.com/?icao=a657b9
https://www.openstreetmap.org/?mlat=34.2412&mlon=-118.4791#map=15/34.2412/-118.4791