Will Hanna Barbera or Winston Cease and Desist youtube?

"Banned" ads and forgotten things have a way of getting unearthed again on the internet, and now with google video and youtube everything old is new again.
Take this Fred Flinstone promotion for Winston cigarettes for example. In the late nineties, any web page that carried the footage would be asked to remove it, since both Winston and Flinstones are trademarks with a posse of lawyers ready to protect them, and so the film went into hiding on the un-googlable gnutella networks, and in the deep storages of avid commercial collectors hard drives.
Now that the film has popped on youtube.com I wonder how long it will take before youtube are asked to remove the ad. And if so, will they comply? What do you reckon?

And if the submissions don't follow Youtube's terms - how will youtube a) know and b) deal with this?

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