This hypothetical question is based on a real incident I saw in the news.
Suppose that a car is driving over the speed limit by a significant amount, causing a police car to turn around and go after the car. When the police get to the car, it’s parked in a rest stop and all passengers are sitting in the back seat of the car. When the police asks who the driver was, all passengers deny being the driver.
What happens in such a situation? Clearly someone was driving the car, but only one of the multiple passengers. Suppose that there is no evidence of who the driver was (no camera footage, for instance). Maybe one of the passengers is the owner of the car, but that doesn’t guarantee that they were the one driving.