ELI5: Explain Like I'm 5

Milk car

A milk car is a special type of car that is used to deliver milk from dairy farms to grocery stores. Milk cars have large tanks that hold the milk, and are insulated to keep the milk cold. The milk car has special doors that open to let people take the milk out and put it in the grocery stores. Some milk cars also have special features like pumps and hoses to help get the milk out of the tank into the store faster.
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