Smart people don't use 4 engines when they build aircraft.
What would bean counters know about aviation and what excuse have Boeing got for the 747 never mind the B52!
No, not daft, realistic.
Quote:
The 15,740km (8500nm) ultra long range A340-500 and stretched 372 seat A340-600 are new variants of the Airbus A340 family, and are currently the world's longest range airliners.
Compared with the A340-300, the A340-600 features a 9.07m (35ft 1in) stretch (5.87m/19ft 3in ahead of the wing and 3.20m/10ft 6in behind), allowing it to seat 372 passengers in a typical three class arrangement. This gives Airbus a true early model 747 replacement and near direct competitor to the 747-400, with similar range, but, Airbus claims, better operating economics (per seat).