"How To Get To Know Your Neighbour" or "The Modest Mailbox With Good Intentions." Case scenario: well-off residential neighbourhood, high social status, expensive properties, luxurious cars, clean, sterile. From house to car and from car to office, then back: office, car, house. No contact. Make mobile mailbox on wheels, big, friendly and long-lasting. Take mailbox to the neighbourhood and leave it there. The mail of one neighbour will get to the house of another.