Spike and Suzy and Suzy happen in real countries all over the world, with Belgium (their home country) as main focus for many stories. While in the early stories large distances were usually traveled using the fictitious "Gyronef", an experimental helicopter devised by professor Barabas, starting from the 1960s all air travel is provided by the Dutch national airline KLM, making it an early and prominent example of product placement in European comics. Vandersteen chose KLM over the Belgian national airline SABENA because of his friendship with Ron Winderink, PR manager at KLM. Willy Vandersteen created "Suske en Wiske", beginning publication in "De
Sabena from Seaboard World Airlines, using them mainly on transatlantic routes. In the same period, there were experiments with helicopter passenger service using Sikorsky S-58 aircraft from Brussels to Antwerp, Rotterdam, Eindhoven and the Paris heliport at Issy-les-Moulineaux. 1960 saw the introduction of the Boeing 707-320 intercontinental jet for trans-Atlantic flights to New York. SABENA was mainland Europe's first airline to operate a jet across the Atlantic (BOAC had been flying jet transatlantic services using the de Havilland Comet 4 since 4 October 1958). One of Sabena's aircraft became the first Boeing 707 to crash while in commercial service when Flight