[Jherbie53]

Like the others have said, it would be hard for you to turn around and go backwards in a quadrant. Other than that, this years game would promote it I think. If you decided not to hurdle the trackball or pick the trackball up off the ground, then you could build a really nice drive train that turns easy and could push the trackball around the track. I don't how easy it would be to build a CAR like drive train,( I'm not that technically inclined in this area ).

The reason why I think most teams don't use it is, like Kevin Sevcik said, you have to do a Y turn to turn around and its so much easier to have a drive train that can spin in a tight radius. Another reason is that it might be harder to build a CAR steering mechanism rather than lining up 6 wheels and running chain to all the wheels from a gearbox.