Was driving on Rt 95 going South into Philadelphia Sunday night around 4:45 PM and as I looked to the left of the highway in No PHL there was a Viewliner train heading South on the NEC. It looked like a consist with a baggage car at the rear, two sleepers and coaches but since the train was moving fast and I had to keep my eyes on the road, I didn't get a good look. AFAIK no Viewliner train should be heading South near PHL at that hour. Can anyone answer the question of the mystery train?