Speed camera tickets show up in the mail weeks after the fact. Say your entire family uses your car. You know who was driving the family car at 2pm on a random sunday five weeks ago? I'm guessing not...
Have you seen these photos though? They barely capture the driver to be honest. The angle is shit for it, decent enough for plate ID but that is it. When I got one it didn't really catch my face and the image quality was terrible anyhow, tons of noise and blur and low resolution and lighting conditions couldn't have been better at the time too. Imagine dead of night, when my interior is unlit.