I wonder how he would get a train out if it fell into the center of the helix? Any way, That's a space-saving layout!
The metal coil of the helix actually creates a negative gravity well inside there so trains just float to the top.
Pure Genius Geeky!!! You could have a working air port in there with remote radio control dog fights! WW I on one end, and WW II on the other, or make a walk-around triangle layout and have Desert Storm jets on the third helix, or a square layout with Flying Saucers in the fourth, or.... Better put a pillow under the helix to retrieve fallen bombs!
