| 摘要 |
A vehicle for entertainment includes a chassis with several support wheels, where at least one of support wheels is a drive wheel, an electric motor drivably connected to the drive wheel, an electric power source, a power supply circuit interconnecting the power source and the motor, for selectively delivering electric power from the power source to the motor, including power circuit first and second terminals, and an activation duration limiting module within the power supply circuit and timed by liquid draining from a drain vessel, where the presence of a sufficient quantity of the liquid in the vessel causes the power circuit terminals to make electrical contact with each other and thereby completes the power circuit, activating the motor, and where the circuit remains complete and the motor activated until enough of the liquid has drained from the vessel to decrease the quantity of the liquid to a level below the sufficient quantity, and thereby causes the power circuit terminals to electrically disconnect.
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