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How to remove gum from a car's interior
Place three ice cubes in a plastic bag.
Take three ice cubes from your freezer and place them in a sealable plastic bag. You may want to double bag the ice cubes to ensure the plastic doesn't tear as you press the cubes into the gum.
A sealable bag is your best choice because it will trap the water as the ice cubes melt. You may want to place a rag between your hand and the ice cubes to make it more comfortable.