Heads up on the Kellogg’s buy 4 for $10 get $5 in Register Rewards promotion going on right now.   The Cars2 boxes are still available at many Walgreens stores.  Buy 4 and enter the codes to score a $5 gift card towards concession chow.  Unfortunately, there are no coupons out there to make this a MM, but if you yearn for “buttery flavored” popcorn while watching your movies, at least you can do it on the cheap.