It is a time issue on how quickly the water will freeze. You had moved the car, so the inside temp of the air was not 32° F, so all that air/interior materials had to cool to 32° F before the water started to freeze, and the whole engine/exhaust system would also have to cool for the whole car to become cold enough to let the water inside cool. So it will take a lot longer to freeze. But if you had not driven the car in days and it was 32° F it would take the same amount of time as if you set it outside to freeze.
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