Diesel Hauled. Southeastern Pennsylvania Transportation Authority (SEPTA) SPAX 52 (née-MILW 2034, SW1200, EMD, 11/1954) and SPAX 51 (née-MILW 2021, SW1200, EMD, 11/1954) are limited to 25 MPH but still working hard as they pass though Levittown, Pennsylvania on Saturday, May 14, 2022. The train, "Extra 52", was bringing all 7 of SEPTA's AEM-7s and lone ALP-44M to Morrisville, Pennsylvania for interchange with Conrail Shared Assets, where they will ultimately be scrapped.