This is such a strange argument, as any reasonable person should know or be able to find out who was driving their car at a specific point in time. But also easy to solve such absurd positions - Change the law to say the owner is responsible for any and all infractions and loses the right to ride and own a car for such infractions unless they identify another driver. But I don't see who wins in this scenario, it is much more logical and fair to go in with the aim to penalise the driver, and for this purpose ask the owner to confirm the driver.