BLEEP BLOOP: I just saw an aircraft with callsign #AAL2404 (ICAO code #AD64CD) flying at 316 kt at altitude 8325 feet MSL at coordinates 34.1948,-118.4689.

They must have had a 50 knots tail wind.

https://globe.adsbexchange.com/?icao=ad64cd
https://www.openstreetmap.org/?mlat=34.1948&mlon=-118.4689#map=15/34.1948/-118.4689