WITH passengers able to walk along its roof while floating serenely in the sky, this futuristic plane looks too good to be true. But the Portuuese designer of the worlds first cloud plane is confident that his revolutionary idea could soon go into production. Passing Cloud is an idea for a novel mode of transportation designed for the traveller less bothered about the destination than the journey. Propelled and steered by wind alone the plane would travel around the USA allowing customers a unique insight into life above the chimney tops. The revolutionary airbus would be constructed from a series of spherical balloons with an inner stainless steel structure covered with nylon fabric. Designer Tiago Barros said: 'The purpose of the project is to minimise carbon footprint, defy all typical means of rapid transportation in time and location, in a way that is innovative, aesthetic and dynamic. 'It would be a unique journey. The feeling of floating in the atmosphere, on top of a cloud, with an open schedule and unknown final destiny. 'It is also an object that could have multiple applications, from its pure leisure and observation deck to its deployment in disaster scene environments. Mr Barros, 33, hopes to put his cloud plane into production but is unsure when the development stage will take off. Daily Mail