In the case that an engine is started in a motor drive priority mode, a first motor and a second motor are controlled in a range of an input limit and an output limit of a battery, such that the first motor outputs a torque for motoring, and the second motor outputs the sum of a required torque and a torque of cancelling out a torque output from the first motor and applied to a driveshaft. A computing system includes a file system and a dynamic directory mechanism. The display light bar defines a channel in which one or more LEDs may be arranged to emit lights of a desired color or colors, providing a method for identifying goods hung on the hanging bar at a distance. The controller operates the variable frequency drive to drive the motor to maintain a constant pressure output condition from the pump assembly. The chemical sensor exhibits predictable changes in response during predetermined exposure scenarios.