Yeah, I have to agree with Gene and Baur.
While they are a neat arcade novelty, the problem with either a stick controlled or motor controlled JoyRider design is that the motion cues are exactly opposite of what they should be. (Beside the obvious problem of being held in the tilted position, instead of just onset cueing.)
Sure, you feel your body moving around, but the open design and always leaning in the same direction as the screen actually betrays the true motion cues you should be feeling and makes the experience seem less real.
A few examples.....
If you go into a steep dive, in a JoyRider, you tilt forward and feel yourself coming out of the seat, right?
But if you have ever been on a roller coaster, what happens when you start screaming down the hill?
You feel yourself pinned to the seat because of velocity. A motion platform would have to tilt back, to give you the same sensation, not forward.
If you bank right, in a JoyRider, you feel yourself leaning right. Now imagine yourself in a car. You make a sharp right turn. Where does your body go? It gets pushed to the left, not to the right. So the motion platform should dip left.
Or, if you bank and you are coordinating your turn perfectly and keeping the ball dead center, you would feel no cues left or right, yet the JoyRider would have you leaning the whole time.
They're neat. They're fun for a party, or for the grandkids to play in.
But they are the antithesis of what a good motion platform should be.