Marcel, a simple-minded factory worker, is tricked into buying a high-priced American convertable car by a widow determined not to let it fall into the hands of her late husband's secretary/secret lover. Once in pocession of the car, Marcel only encounters one bad luck episode after another with the excessive gasoline consumtion, his wife trying to sell it to make ammends meet, getting into traffic jams, accidently riding into a car wash with the top down, and more.
Robert Dhéry
as Marcel Perrignon
Colette Brosset
as Paulette Perrignon
Louis de Funès
as Police station secretary / Head of personnel
Michel Serrault
as Tramp
Jean Lefebvre
as Chougnasse
Alfred Adam
as Alfred
Robert Burnier
as Houche
Pierre Dac
as Colonel
Eliane D'Almeida
as Simone
Bernard Dhéran
as Mr. Jean
Annie Ducaux
as Mrs. Lucanzas
Jacques Fabbri
as 'Le gros' / Fatso
