interior width, and with almost as much legroom as the long-wheel-base 1942 One Eighty, which still used the old-style Packard bodywork. The smooth straight-eight of the One Sixty and One Eighty Clippers, featuring a , nine-main-bearing crankshaft and hydraulic valve lifters, was the most powerful engine in the industry through 1947, exceeding Cadillac's V8 by . It could deliver in second gear overdrive and take the car to over 100 mph on Packard's Proving Grounds banked oval track. In 1950, ten years after Packard's nonpareil nine-main-bearing 356 inline 8 debuted, Rolls-Royce copied the design for their nine-main bearing, F-head 346-ci B-80 inline 8, used only in a handful of Phantom IVs produced solely for heads of state, military vehicles, and Dennis fire trucks. Like Packard's 245-ci six used in junior Clippers, Packard's 1940–50 356 Super-8 engine was widely used as a marine engine. The top-of-the-line Clipper One Eighty offered two shades of leather or six colors of wool broadcloth upholstery, Mosstred carpeting from New York's Shulton Looms, walnut-grained instrument panels, amboyna burl garnish moldings, seatbacks stuffed with down and rear center armrests. Unlike any other contemporary, the post-war Custom Super's headliner was seamed fore to aft instead of sideways. Packard claimed that the unique headliner was adopted "to provide a more spacious feel to the interior." With a nearly full line of Clippers, Packard managed to build 34,000 1942 models before production ceased in February (an annual rate of around 80,000). According to John Reinhart, there is no doubt that Clipper styling would have proliferated in 1943–45. "The next logical step would have been convertibles and commercials—and a wagon." But the war intervened. Whereas Cadillac with its greater facilities was able to field a complete line of restyled 1942s, including convertibles, all of which came right back in 1946, Packard was able only to add a club coupe body before the war. The club coupe was the sportiest Clipper with about 40 built before production closed down in 1942; a single One Sixty is the only example known to exist. Postwar, about 600 senior coupes were made, compared to about 6,600 senior sedans. In 1946–47 the numerical designations were dropped and the line consisted of Clipper Sixes and Eights on the wheelbase and Supers and Custom Supers on the wheelbase. For the first time there were now seven-passenger sedans and limousines, riding a wheelbase. For their type, these "professional Packards"