I dropped my mother off one day and left the car running. As she was getting out she hit the button to lock the car, I didn't realize that she had done it. I called my husband and he wasn't at home (before cellphones), so I had to call my son to go to the house and get the other set of keys and then deliver them to me, I had to wait about an hour for him. Needless to say I always take my keys with me when I get out of the car.