Airbus filed for a new patent in 2013 and which was approved this week: “…Airbus [is] reconsidering the boarding process with an idea to turn aircraft cabins into what amount to shipping containers.”
Passengers would board a module at the gate. Everyone sits down. The module would be lowered into the plane once it arrives. Then when the plane makes it to its destination, the cabin module would be removed and swapped out for new passengers in their own module. And the plane goes on its way.