Many years ago I visited Buenos Aires, Argentina. In the flat parts of the city center, people would parallel-park their cars and leave them in neutral (very few cars had automatic transmissions) and without setting the parking brake. When you arrived and found a parking spot, there would be a man that, for some standard tip, would push all the cars in front or behind you, one at a time, until they were all bumper to bumper. This expanded the slot where you wanted to park, making your parking very easy.
When you wanted to leave, he would likewise push cars in front or behind you to widen the slot where you were, making it easy for you to pull out.
When you wanted to leave, he would likewise push cars in front or behind you to widen the slot where you were, making it easy for you to pull out.