Ground ambulances are generally much less expensive, with an average emergency run coming in at $800 to $2,000, depending on the region and other factors, according to J.D. Fuiten, secretary of the American Ambulance Association. During an emergency, when the aircraft show up, there's usually no mention of money.
The traditional electric motor on a diesel-electric or electric locomotive is a DC motor. Internally, DC motors have two main components: the stator is the stationary outside part of a motor. The armature is the inner part which rotates.
BHP iron ore did this to test locotrol which is where locomotives are evenly placed along the length of the train. The locotrol setup was 2 locos-166 wagons, 2 locos-168 wagons, 2 locos-168 wagons, 1 loco-180 wagons then the last locomotive on the back. This very long train is controlled by only one driver.