Riddle.

3 people were going to the store.The driver is on the left side of the car.The other two people are on the right side of the car.The first person,who is in the front,gets out of the car.Before the person gets out the driver warned the person",Don't hit that car with the car door".The second person, the one in the back,gets out of the car.Before getting out of the car,the driver warned the second person,"Don't hit that truck with the car door."