Speed king

Have you noticed that they can do this type of thing with no ill effects and very shortly you'll find he will remain dizzy free on roundabouts at about 60rpm. You on the other hand will be distinctly queasy simply from standing and watching.

Probably a left-over from being defenceless against a sabre toothed tiger. Kids ran round it until it decided that Whiskas was the better bet.

Just a theory of course

Sounds plausible to me