R.I.P. PG-Rated Movie Smoking

First it was Tom and Jerry; now smoking will be considered during the rating process of all movies. Yet another reason I'm glad I quit months back. One thing: will this apply to older movies, too? Has Fear and Loathing in Las Vegas now earned its rating for its "Pervasive Extreme Drug Use And Related Bizarre Behavior, Strong Language, Brief Nudity, and Pretty Much Near Constant Smoking?" Will Out of the Past, named by Roger Ebert as the greatest smoking movie ever, now be a hard R? So much for rearing your kids on the classics.