The divider can help hold the handles of lightweight bags, such as takeout, groceries, or small purses. Looping the handles around it can keep the bag more upright while the car is moving.
This simple trick can help stop items from tipping over, sliding onto the floor, or spilling during turns and sudden stops. It is best used for lighter bags rather than heavy loads.
Not every car has the same cup-holder design, but many include a divider that can be used this way. It is a small example of how an ordinary-looking feature can make everyday driving a little easier.