Too bad the 747 couldn't be fitted with 2 of these to make them more efficient and keep them in skies.
You can buy a new 747-8 with General Electric GEnx engines, or Rolls-Royce Trent engines.
The biggest problem is seat capacity per fuel burned -
The A380 is a bit bigger (50 more seats) with about the sane fuel burn,
and the newest 777 will be almost as many seats, but far less fuel burn.
The 747 was A M A Z I N G
to the airline industry when introduced -
and forever changed air travel.
It will be 50 YEARS OLD next year - impressive by any standard.
It's just that it's time has come...........
and better options are nor available