In December 1942 over a "five-shilling meal" at the Swan and Royal in Clitheroe, Stanley Hooker and Ernest Hives of Rolls-Royce agreed with Spencer Wilks of the Rover Car Company that Rolls-Royce would take over top secret work on the development of the jet engine. An exchange of assets followed with Rover and in the post-World War II period Rolls-Royce made significant advances in gas turbine engine design and manufacture. The "Dart" and "Tyne" turboprop engines were particularly important, enabling airlines to cut times for shorter journeys whilst jet airliners were introduced on longer services. The Dart engine was used in Armstrong Whitworth AW.660 Argosy, Avro 748, Fokker F27 Friendship, Handley Page Herald and Vickers Viscount aircraft, whilst the more powerful Tyne powered the Breguet Atlantique, Transall C-160, Short Belfast, and Vickers Vanguard, and the SR.N4 hovercraft. Many of these turboprops are still in service.