I had my car in drive in a parking spot. I was ready to go, put the car in drive, DID NOT MOVE but needed to put it in park fast to assist to a child in the back seat. I put it in park pretty fast. Took my seatbelt off and assisted child. It must have not engaged. Car rolled into my office metal mailbox. I 100% put it in park. I took my seatbelt off after so I seen it. It was fast with the gear shift though. Should this have been an issue? I feel like if it was any other car you with a manual gear shifter , not electrical, it’s fine. I feel this was not my fault at all and was a malfunction of the car. The car did not automatically stop either. It hit the mailbox at like 3-4mph. I have never been in an accident of my fault in 10 years of driving. I’ve never made a crazy mistake like that. It should’ve never happened. I drive all types of cars/ and trucks. This is also a lease and I’m SO PISSED. Especially because my kids were in the car. Luckily no one was hurt and no property damage. Just the car.