There are a few ways to get rid of coffee smell in a car. One way is to pour a pot of water on the coffee and let it sit for a few minutes. Another way is to put some baking soda in a small bowl and add cold water. Pour the mixture over the coffee and let it sit for a few minutes. Finally, another way is to put some vinegar in a small bowl and add cold water. Pour the mixture over the coffee and let it sit for a few minutes.