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I have thus far been unable to locate the "video" of the bellhop getting jerked around.
The problem with finding this particular video. . .is its a GIF. I found it in another forum(that thread was devoted to creating an electrical turbo off of large saw blade, for some reason there was avilable electricity). The reason that idea also wouldn't have worked very well is because the blade would have to spin very fast and would be reasonably heavy, so turning the car would cause enormous torque on the engine, mounts and blade itself.
Any form of translation of the energy will force the flywheel to rotate one direction or another(or apply torque up or down if the axis itself is tilted). Unless the flywheel can spin freely all the time in all directions it will dissipate all of its energy very quickly trying to go the new direction.
It would be rather complicated to apply force to the wheel or recover it because the wheel if turned or tilted will begin spinning on its mounts. So instead of it resisting for a moment and then assuming the new direction it will continue to resist/accelerate until an equal translation has been completed.
One of two things has to happen to avoid the wheel losing its KE A.) the mounts have to isolate car motion and the car "rotates" around the flywheel or B.) the flywheel is allowed to rotate freely in all directions to avoid dissipating energy. If you had some very low friction bearings you could attach a generator and drag it out as electric power but it may be difficult to complete a circuit on something that rotates like a sphere with no permanent predictability.
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