A combi version of the 747 Large Cargo Freighter?

According to a report on the Flight Global website, Boeing is planning to add a 16-passenger cabin to its 747-400 Large Cargo Freighter, the heavily modified 747-400 the manufacturer uses to ferry 787 subassemblies from all over the world for final assembly in the US. Turning the LCF into a “combi” would allow Boeing to move staff between its various 787 manufacturing locations without the need to depend on commercial airlines.

This is not going to happen overnight (Boeing says it will take several years), nor is it going to have a major impact on the world of air freight, but it gives me an excuse to post one of my favorite air freight pictures: This shot of the vast, almost cathedral-size interior of the Large Cargo Freighter. Have any of you ever been inside this thing? It must be amazing.