Here's a picture I found of a similar NYC subway car. (Okay -- everybody breathe in!)
No.
SEPTA is on an “Severe Weather” schedule, and I haven’t seen a bus with more than one or two people on one when they pass me (I seldom do the subteranian thing anymore). I’d assume most of these people are medical support workers or food industry workers.
“Ghost Town” wouldn’t begin to cover it.