This document lists various risk scenarios that could cause problems for a level 4 self-driving car. It identifies risks related to the car's sensors being spoofed or breaking down. Environmental risks include unmapped roads, natural disasters, and obstructions. Passenger-related risks include intoxicated or unconscious passengers. Social risks involve carjacking, remote theft, or the car being weaponized. The document also discusses responsibility and privacy issues if the car encounters trouble.