Sun or Moon?

My car has a "moon roof." A "moon roof" not a "sun roof." So what would be the difference do you reckon? Both objects shine in varying intensities and make or reflect light so why the specific distinction? When I drive to work in the morning the sun shines through the roof and when I drive home the moon shows through. It seems as though it should be called a "light roof" or a "see-through roof." I will say sometimes the sun shines too brightly through the roof opening and I have to pull the cover shut. Is that why it is for the moon only? I drove home Monday and Tuesday nights with the "moon roof" open and truly enjoyed it. It was a bit odd when passing under street lamps though. The light from the lamp shown through the car's roof as well as through the windows. An odd experience, but rather cool. And what about those nights when it is cloudy or the moon isn't visible? Then should it be called a "darkness roof" or a "lack of moon roof?" I think I've lost the plot now. What ever the reason is, I really enjoy my car's "moon roof" and have it open as often as possible.

Today's interesting fact:

At new moon, the Moon is lined up between the Earth and the Sun. We see the side of the Moon that is not being lit by the Sun (in other words, we see no Moon at all, because the brightness of the Sun outshines the dim Moon!) When the Moon is exactly lined up with the Sun (as viewed from Earth), we experience an eclipse.

So then what would my "moon roof" be called? Think I'm going to lie down now......... Sue