Truck: two-axle chassis connected
on a pivot to the main chassis, allowing the car to go around curves.
Inflated carrying tire: tire inflated with compressed air.
Current bar: part that slides along the electric circuit.
Inflated guiding tire: tire inflated with compressed air that
guides the car along the track.
Guiding bar: track along which the guiding tires roll.
Runway: track along which the guiding tires roll.
Running rail: track along which the safety wheels roll.
Steel safety wheel: security wheel.