I'm a patron of the center, I can state they have TONS of other cars and engines that they can swap out... not so sure about the layouts, and the out door stuff is seasonally decorated
The museum is always growing and changing. It is not on any type of schedule, it is all organic as the members work on the displays. Every time our repeat Customers come in, they always see something new whether it has changed or they just didn't see it last time!!
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