The PAtCO Sppeline was introduced in 1969 as an innovative, high speed commuter train with limited stops crossing the Delaware river via the Benjamin Franklin Bridege. While this service was highly successful it cannibalized other rail services which were never replaced.
Alan is on a bit of a rant, which he freely admits, over a journalist who didn't do his research and published an uniformed opinion piece that Amtrak should focus solely on high speed rail instead accepting states' funding to connect their cities and towns.
Rosevelt Blvd is on of several unpopular commuter routes into Philadelpia. But Roosevelt Boulevard has a central median that would be perfect for a rail line. So why was one never built?
SEPTA's Schuylkill Valley Metrorail Corridor concept was a promising solution to the I-76 Schuylkill Expressway traffic problem. But piece by piece it was curtailed until only a route to King of Prussia remained. It too has now been canceled.
How many problems with the Benjamin Franklin Parkway can you count. Here's Alan list. And not to worry. There are some good improvement proposals in the works that we may hope will happen in our life times.