I don't think it is a 'thing'. To me it seems like light reflecting off the object (if cds) and creating an optical illusion of depth. The problem here is you've got light reflecting off the object and off the windscreen, and with the way cds reflect light as well it just makes it worse.



ETA. It's a shame the quality/definition isn't better for zooming in.

__________________
I don't believe in mathematics. Albert Einstein

Biologically speaking, if something bites you it's more likely to be female. Desmond Morris.

Quantum analysis is scientific dithering

Professor Frink: My observations n'hey, n'hey, show the universe could be a torus Weh, uh, or toriod it may like the typewriters and bananas and the monkeys with big teeth the biting the screaming Mm-hai!

Homer: mmmmm... doughnuts!