Well the truth is that Philly needs more subway lines to better serve the city.
People don't want to be on the street waiting for a bus when the subway can avoid detours due to construction or city events like a parade.
You really don't see the type of subway expansion like you see in NYC whatsoever.
This is why many commuters will drive more.
In Center City, not everyone finds a station along Market Street or Broad Street convenient to their destination.
In Manhattan for example, if you wanted to go further west on 42nd street from Times Square, you'd have to wait for the M42 bus, but that's only one block until it turns north, which you wind up walking for several blocks to your destination; but the MTA expanded the 7 line recently.
Back to Philly, where the Broad Ridge Spur does not go far enough.
How about a Market-Franklin Spur to serve the Ben Franklin Parkway with subway service from the Market-Frankford line?
How about a Girard Ave subway line?
I understand that the Subway-Surface (green) line serves a dual purpose, but that's just a cheap low-cost method that could have been better served with dedicated subway lines serving West Philly much better.
Northeast Philly is another area severely underserved.
The Roosevelt Boulevard, Bustleton Ave, Grant Ave, etc. could easily host their own subway lines, serving the city residents much better.
I applaud the MTA's Manhattan investment on the new 2nd Ave subway, a line I hope to ride someday.
If you enjoy visiting big cities, you know that it's much more enjoyable to park in a garage and enjoy mass transit (that's always been my preferred method).
Thoughts?