EMIRATES is pushing Airbus and Rolls Royce to develop a more fuel-efficient version of the A380 superjumbo, saying more orders of the jet will be placed if such a goal is achieved.The above snippet is the first part of an article sent to subscribers in Travel Daily's issue from 05 May 14 To see the full story, see the embedded issue below or CLICK HERE to download Travel Daily from 05 May 14