planes crashing into skyscraper

iron - 1.2m x 0.25m x 0.25m
value - a yearly GA-Travelpass
N/A - jan 2016

go get it!

Thirty spokes share the wheel's hub
It is the center hole that makes it useful
Shape clay into a vessel
It is the space within that makes it useful
Cut doors and windows for a room
It is the holes which make it useful
Therefore profit comes from what is there
Usefulness from what is not there

tao te ching - vers 11