This European car ad never aired, due to what some people say is a ghostly apparition appearing half way through, others reckon it's a digital prank.

Watch the car as it drives and notice a ghostly white trail appears beside it as it come out from behind the trees, and if you have speakers turn them up and you will hear what sounds like a faint female voice crying.
I am still not sure what I believe on this one.
You be the judge....Enjoy