There were only two other auto makers that introduced all-new 1941 models which were stopped short by the American entry into World War II and thus rendered obsolete before their time. Besides Packard, Ford brought out a much changed design for the 1941 model year — the restyled Ford and its Mercury clone. Nash also produced all-new 1941 models, using monocoque "unitized" construction for the first time. General Motors redesigned for 1942, arguably a piece of bad timing even worse than Packard's, but the 1942 cars were so relatively few in number that they still looked reasonably new when GM resumed automotive production in 1946. The Ford/Mercury comparison is not apt either, primarily because these were quite different cars from Packards, with no pretence of luxury. Nor did their design history mirror the Clipper's. The 1941 Fords and Mercurys were evolutionary developments, clearly related to the 1940s they replaced. The Clipper was such a dramatic break with previous Packard design as to preclude comparisons.