About 50 years ago I gave an organization called 'Bring back the B-36' a hundred dollars to help to pay for restoration a B-36 that was in Texas at the old Greater Southwest airport* on display.
The B-36 never flew and I didn't get my money back.
But I'd bet a beer that the B-36 will fly again before the Concorde.
Hope I'm wrong.
* It was destroyed when DFW was built. However one on the runways is still being used as the main highway leading into DFW from the south.