Ok, about the Breguet 1000-ton plane:
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It was part of several 1941-1945 design studies of unconventional "stratospheric" air liner/cargo aircraft, labeled Bre.850/851. There were three of them: 230 tons, 500 tons and 1000 tons.
All three were twin-hulled aircraft with boom tails and pressurized
wing cabins, which also served as a main structure elements of the wings. The passenger cabins were supposed to be put inside those pressurized wing cabins, while hulls were left for crew cabins and unpressurized cargo hulls. It was assumed that such unconventional scheme would allow to save a lot of weight, since pressurized passenger cabins were also providing the wing longitudinal strength.
All projects relied on the Hispano-Suiza 12Z motors (or HS 24Z tandems) of 1200-1600 hp in large numbers.
The 230-ton plane (1941) was supposed to carry either 200 passengers, or 96 passengers and 30 tons of cargo. It was powered by 28 Hispano-Suiza 12Z motors in seven quadruple mounts on the wing. It was the only one of which a wind tunnel model was build and some actual development committed.
The 500-ton plane (circa 1942) was supposed to carry about 500 passengers, and was powered by either 60 Hispano-Suiza 12Z motors, or 30 Hispano-Suiza 24Z tandem motors.
The 1000-ton plane (circa 1942) was supposed to carry 710 passengers (and a crew of 30), and 30 tons of cargo, or just 101 tons of cargo. It was the same design as previous ones - twin-hulled with pressurized wing cabins - but much larger, with wingspan about 192 meters and surface area of 3700 m2. Empty, it weighted 495 tons, fully loaded (including 450000 liters of fuel) - 1000 tons.
This flying giant was supposed to be powered with 120 (!) Hispano-Suiza 12Z motors, placed in fifteen octuple mounts along the wing.
All Bre.850/851 projects seems to be abandoned after 1945.