EMD Demonstrator cabs, as seen on EMD 5-7 (GP60 demonstrators) and EMD 8-10 (GP59 demonstrators). This group of locomotives brought back the vee-shaped cab face dating from the GP30. From bottom right to top left: GP60 demonstrators as built, GP59 demonstrators as built, GP60 demonstrator as modified for CSX, GP60 demonstrators as modified for Norfolk Southern.