It's 7am on a cold, dark morning. You're obviously in a hurry and reverse into your neighbor's car right as they are opening their blinds. They very obviously have seen you and are coming out to talk and check the car.
A: drive off before they get outside. It's was most likely a tap and you're in a hurry.
B: get out to quickly check you haven't done any damage and apologize before heading off.
If you're the neighbor in the house, what do you do?
A: leave it be and check on the car later
B: run out to check it's fine and knock on their door to speak with their partner when you realize they drove off.