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.
It refers to the number of wheels on the engine. First number is leading wheels, second (and sometimes third) are the driver wheels, and third (or fourth) are trailing wheels. So, I think, 2-6-0 would have one axle in front and two axles with large wheels at the center connected to the drive train and no axles in back.