Chowchilla Kidnapping School Bus

Origins
The Chowchilla kidnapping occurred July 15, 1976, with the kidnappers abducting 26 children and their bus driver. The abductees were forced into a hole with a van, located in a quarry, where they escaped by piling up mattresses available. The abductors were found guilty and convicted, 23 of the children three years later reporting mental issues because of the event.

Effects
The bus lets anyone who enters it become unnoticeable to people for 16 hours, except to another person who has been inside the bus. For every time entered, another sixteen hours is added to your disappearance. Multiple use can cause panic attacks, nightmares, alcoholism, mental breakdowns, depression or substance abuse.