LOL notice you want your car seen but not your reg plate!...its a large reflective item on the front of your car perhaps your car would be more visible if you wiped it now and again!
O you've noticed that, the Police haven't yet
if you can't see a car in broad daylight because it hasn't got its lights on then I think you probably shouldn't be on the road in the first place.
You can see alot in broad daylight, but there are many different cercumstances in which headlights on would help.