BLEEP BLOOP: I just saw an aircraft with callsign #SWA1550 (ICAO code #AC98AC) flying at 278 kt at altitude 5075 feet MSL at coordinates 34.1380,-118.4358.

That plane was making good time.

https://globe.adsbexchange.com/?icao=ac98ac
https://www.openstreetmap.org/?mlat=34.1380&mlon=-118.4358#map=15/34.1380/-118.4358