I shot this short video clip as I passed two of the new engines this morning leaving Hoboken for Ramsey, NJ. In speaking with our engineer, these are the test engines they are using to get everyone up to speed. However, he told me they have had a slight accident already: After switching to diesel from the Catenary. They had the Cat still raised and it hit something! OUCH! They had to cut it off and order a replacement! So don't know which one, the 4507 or 4510 will be single power for awhile....