This two-canvas backdrop design is pretty classic. The reason it's made of two canvases is pretty obvious - it needs a "front" and a "back" to create the illusion that someone is inside the plane. Back in the day, this two-canvas design was used for images of planes, hot air balloons, etc. In the age of greenscreen and computer animation, it's really so, very, very simple and low-budget. Tell me honestly. Which is more fun?