Now, after a massive sinkhole swallowed eight pristine models, attendance has sky-rocketed.
And visitors are as eager to peer into the chasm as they are to see the cars, if not more so.
Museum spokeswoman Katie Frassinelli said the response has been bigger than anyone imagined.
In the months since the earth opened up in February, business has shifted into over-drive.
Since reopening after a one-day closure, attendance is up nearly 50% from the same period a year ago.
Sign-ups for museum memberships are rising fast. And the merchandising has started, with sinkhole-related shirts, postcards and prints.
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