The photos of today's flypast at Toulouse (the 4 test aircraft A380 MSN 001, MSN 002, MSN 004 and MSN 009) were something else, very impressive.
What will happen to these 4 aircraft once the testing and certification is complete? Will one/two/all of the aircraft become the first passenger-carrying A380s sold or will they be retained as further test/museum items?
Presumably some of them will have flown so many hours in all sorts of conditions that they will have some wear and tear before too long?