Directed by Robert Dhry, Pierre Tchernia. With Alfred Adam, Colette Brosset, Robert Burnier, Pierre Dac. Marcel, a simple-minded factory worker, is tricked into buying a high-priced American convertible by a widow determined not to let it fall into the hands of her late husband's secretary/secret lover. Once in possession of the car, Marcel only encounters one bad luck episode after another with the excessive gasoline consumption, his wife trying to sell it to make ends meet, getting into traffic…