Final test to make the last adjustments, and the Monday July 16 begin to circulated between Plaza Constitucion and La Plata with a express service, stoping only at Villa Elisa and City Bell. Led by the EMD J26CW/AC 319-314-1, and the cars SOREFAME converted at towed. The journey is covered in 55 minutes. In this photo, the train passing swiftly with Quilmes station, en route to Plaza Constitucion station.