Neener neener. So a tank crashed through the floor. Great. they then reinforced the floor. That only proves that they were working on tranporting tanks in it.

Well the book again is titled Warplanes of the Luftwaffe. It only said that it could be done. Nowhere did I emphatically state that it had been done. I said I "read" about it being done. WW2 magazine stated that the 321 was used in North Africa.You asked for a source, I gave one. Rommels last stand.

If it fascinates you, then you should seek out your own sources.