Now, this is just a made up theory, so don't get too far down and technical.
To both Airbus and Boeing:
Both the upcoming 787 and A350 will be made in huge numbers, and the current production facilities won't be able to keep up. Boeing is considering building another line, but they are worried that their suppliers can't keep up, and that the orders won't come in this volume for too long. Here is an idea. It is what I call the "Burst Line"...
At Boeing's Everett site, there are 6 halls. (2 for 747, 1 for 777, 1 for 767, 1 for 787, and 1 spare). <- last time I checked.
The plan is that they build another building (say big enough for 3 whole lines), and use it for 787 production. This would easily handle the immense influx of orders the new aircraft would be getting. Now, after about 5 years, orders would come in at a slower pace, and they would close that line, and use only the 1 line in the main building for the 787. The now empty facility can be used for the initial burst of orders for the 797.
Hence, it is called the Burst Line, because that one assembly building would handle only a given aircraft type for a short while, (while there is a burst of orders). When orders die down for a given type, they can easily reconfigure the line for the next new aircraft and its burst of orders.
Anyone think this is a logical idea?