All the passengers carry their seats out onto the tarmac, placing the chairs in the outline of a plane. They all sit down, flap their arms and make jet swooshing sounds as if they are flying. Each passenger brings a piece of the airplane and a box of tools to the airport. They gather on the tarmac, arguing constantly about what kind of plane they want to build and how to put it together. Eventually, they build several different aircraft, but give them all the same name.
Some passengers actually reach their destinations.
All passengers believe they got there. There is no airplane. The passengers gather and shout for an airplane, then wait and wait and wait and wait. A bunch of people come, each carrying one piece of the plane with them. These people all go out on the runway and put the plane together piece by piece, arguing constantly about what kind of plane they're building.