If you are interested in this kind of thing, you might want to check out this link, The Orgeon Vortex as well as take a look at their photographs.

Of course there is a lot more curious and really off the wall occurences that go on there, such as neatly balancing a broom on a floor that is tilted 30 degrees to one side, as well as rolling a ball bearing uphill even though one perceives that the bearing should be following the guidlines that gravity puts forth.

Of course the ball bearing is no where the size of a car, but the mystery and the phenonemon do occur every time, and if you are interested in aquiring such a place, you can even purchase it. =)