CSXT 4 leads Q135 through Hilldale on a rainy fall afternoon. After the initial 3 unit purchase (9100, 9101, 9102) for testing by CSX in the June of 1994, former 9103 was the first unit produced for purchase order 1853CSX in the fall of 1994. The initial order totaled 36 units, and thus began the AC revolution on CSX which dominates road power today.