The planned unmanned aeroplanes will be able to lift much heavier goods into the air than conventional aircraft, thanks to a unique body design. Air transport is currently the fastest way to transport goods, but also the most expensive, compared to the extremely slow but cost-effective water transport. Californian start-up Natilus is trying to bridge the gap with an unmanned aircraft that, thanks to its mixed-wing body, will be able to carry 60 percent more cargo than an aircraft of the same size.