I was driving down a busy road with my 4 year old in the backseat. They then opened the door while I was driving. This scared me as my car is set to lock automatically while driving. I quickly pulled over, shut the door, got in, and re-locked the door. Once the door was re-locked I climbed into the backseat with the car still running and was able to open the door again. I then exited the open door, and was able to open the "locked" drivers door, and get back in. I then locked the doors again, and tried opening the drivers door, and it opened. I shut my car off, turned it back on, locked my doors, tried opening the door, and it was locked. This is NOT safe for my child!