CAPRA R.80
A rather awkward proposal for a trans-Atlantic mailplane (freighter in modern terms).
A flying boat designed by the relatively obscure French manufacturer CAPRA, now the missile company MATRA, to operate a Portugal-New York freight service during the ealy days of WWII. The aircraft was designed to be catapult launched, and at the end of it's flight the engines were to be shutdown and the propellers locked in the horizontal for a glide approach. On the water a small propeller would be deployed to allow water manoeuvring. One of the major flaws of this scheme was that no-one had approached the Americans about the construction of a catapult in New York to allow the service to return to Europe.
A larger twin-hulled model was also proposed, but by the time the US had entered the war the project was dropped.