Cab cars are a Keystone along Amtrak's Philadelphia to Harrisburg, PA segment of the aptly named Keystone Corridor. Amtrak does in fact run some east to west trains (originating in New Yord City) with locomotives on the point, but the odds always seem to favor a cab car in good light... Captured above, is cab car No. 9634 running on the outside track - the norm, past the 1876 built Strafford station, roughly 15 miles west of downtown Philly.