[Video Link] Arbroath says: "This quite famous clip shows a high-ranking official of the Austrian equivalent of The Milk Marketing Board demonstrating how to use their newly-introduced wax/cardboard milk carton." It's probably from the 1980s.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects