Philly’s Airport Train is a Little Weird https://www.youtube.com/watch?v=tH1zcTLOCM0 Traveling from Terminal A at Philadelphia Airport to 30th Street, in Center City on the SEPTA Airport line takes under 30 minutes.
https://en.wikipedia.org/wiki/Airport_Line_(SEPTA)
https://www.phl.org/getting-around/public-transportation
https://www.reddit.com/r/transit/comments/1gf0pz3/why_isnt_the_septa_airport_line_rapid_transit/
https://en.wikipedia.org/wiki/Philadelphia_International_Airport#Ground_transportation
