The characters depart for Paris in a twin-engine airliner. Aviation regulations at the time mandated three or more engines for transoceanic flights, and most Western single-aisle jetliners in transatlantic service in the early 1970s had four engines. Additionally, the jet has distinctive wingtips that weren't introduced on commercial aircraft until the 1980s.
A Stella motor scooter is prominently shown in the foreground. A Stella is a 21st century reproduction of a period-appropriate Vespa scooter, but the Stella brand did not exist at the time, so the scooter should be badged as a Vespa.