A carhop mannequin -- named Harriett -- holds a tray above a Dodge at the ’57 Heaven Museum. (Dan Neil / Los Angeles Times)
The Chevrolet “El Morocco” was a Bel Air cosmetically modified to look like a Cadillac. GM’s effort to market it as an affordable Cadillac failed, and fewer than 20 of the cars were built. (Dan Neil / Los Angeles Times)
An aquamarine 1957 Hudson two-door hardtop. (Dan Neil / Los Angeles Times)
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A 1956 Indianapolis Pace Car convertible. The winner of the ’57 Indy 500, Sam Hanks, received one the pace cars as part of his prizes. (Dan Neil / Los Angeles Times)
A 1957 DeSoto Adventurer is one of the rarest and most prized cars in the collection. This was the first American car to have 1 horsepower per cubic inch of displacement, which equaled 345 hp. This example has a record player in the dash board. (Dan Neil / Los Angeles Times)
The stacked tailfin of a 1957 DeSoto in the foreground, and those of two Plymouths in the background, at the ’57 Heaven Museum in Branson, Mo. (Dan Neil / Los Angeles Times)
The “Continental” kit on a 1957 Oldsmobile “98” convertible. (Dan Neil / Los Angeles Times)
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A full-size recreation of a Texaco service station, circa 1957, in the ’57 Heaven Museum. (Dan Neil / Los Angeles Times)
A parking meter with time expired on the ersatz sidewalk of the ’57 Heaven Museum. (Dan Neil / Los Angeles Times)
Bob Schmidt, former curator of the ’57 Heaven Museum in Branson, Mo., sits in a ’57
William and Karlene Burgener, of Merrill, Wisc., stop to admire the ’57 Heaven Museum’s “Casa de Cadillac” exhibit. The car is a 1957 Cadillac Eldorado Biarritz. (Dan Neil / Los Angeles Times)
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The badge on the nose of a 1957 Chrysler Imperial convertible, at the ’57 Heaven Museum. (Dan Neil / Los Angeles Times)
The diner display of the ’57 Heaven Museum. (Dan Neil / Los Angeles Times)